阅读说明：本技术 一种隔热帆布织物的生产方法 (Production method of heat-insulating canvas fabric ) 是由 周云 于 2019-11-16 设计创作，主要内容包括：本发明涉及一种隔热帆布织物的生产方法,其生产方法如下：给纱、退圈、收针、织针从导纱器引出新棉线、麻线或化纤垫入针钩下、弯纱、成圈,间隔1或2针的相邻织针受到选针参加编织,退圈并垫上新棉线、麻线或化纤,相邻织针之间的1针或2针未被选中而退出工作,使旧线圈保留在针钩内,以N路单路组织进行循环编织获得帆布坯料,N路单路组织中奇数路以棉线或麻线编织,N路单路组织中偶数路以化纤编织,N路单路组织中每3的倍数路重复至选针步骤,通过隔热涂层胶的胶槽后脱水热定型,脱散性较小,织物表面平整,降低疵率,横纵向结构紧密,回缩率小,可减少生产工序,提高隔热效果和稳固性。(The invention relates to a production method of a heat-insulating canvas fabric, which comprises the following steps: the method comprises the following steps of guiding a new cotton thread, a new hemp thread or a new chemical fiber out of a yarn guide for yarn feeding, loop withdrawing, narrowing and knitting, padding the new cotton thread, the new hemp thread or the new chemical fiber under a hook, bending and looping, knitting adjacent knitting needles with 1 or 2 needles at intervals, backing up the new cotton thread, the new hemp thread or the new chemical fiber, withdrawing 1 or 2 needles between the adjacent knitting needles without selecting and leaving the old knitting loop in the hook, circularly knitting the N-path single-path tissues to obtain the canvas blank, knitting odd-numbered paths in the N-path single-path tissues with the cotton thread or the hemp thread, knitting even-numbered paths in the N-path single-path tissues with the chemical fiber, repeating every 3 times in the N-path single-path tissues to the needle selecting step, performing heat setting after passing through a glue groove of a defective coating glue, and having small detachability, flattening the surface of the fabric, reducing the dehydration rate, having a compact transverse and longitudinal structure and a small retraction rate, reducing the production processes, and improving the heat insulation.)

1. A production method of a heat insulation canvas fabric comprises the following steps:

(1) feeding yarns: cotton or hemp threads and chemical fibers are sent to a knitting area of a knitting machine by traction;

(2) ring withdrawing: the knitting needle rises, and a sinker throat of the knitting machine holds the old loop to enable the old loop to be separated from the needle hook to the needle rod;

(3) narrowing: the knitting needle retreats from the highest point to a narrowing plane, and cotton threads, hemp threads or chemical fibers transferred to a needle arc due to the circle retreating are withdrawn;

(4) yarn laying: the yarn guide arris of the knitting machine is positioned between the knitting needle and the nose of the sinker, and the knitting needle leads out new cotton threads, hemp threads or chemical fiber pads from the yarn guide and enters the lower part of the needle hook;

(5) yarn bending: the knitting needle descends to enable the needle hook to contact cotton, linen or chemical fiber to gradually bend yarn and continue to form a new coil, and the lug of the sinker leaves the knitting needle;

(6) looping: the knitting needle descends, and the old coil pushes the latch to close to form a new coil;

(7) needle selection: adjacent knitting needles with 1 or 2 needles at intervals are selected to participate in knitting, loops are withdrawn, new cotton threads, hemp threads or chemical fibers are padded, and the adjacent knitting needles are withdrawn from work without selecting the 1 or 2 needles, so that the old loops are retained in needle hooks;

(8) drawing: pulling off an old coil and a formed new coil, pulling the old coil and the formed new coil to the back of a latch needle, separating from a knitting area, repeating the steps (1) to (6) or the steps (1) to (7) to form a one-way tissue, circularly knitting N-way tissues to obtain a canvas blank, knitting odd-numbered ways in the N-way one-way tissue by cotton threads or hemp threads, knitting even-numbered ways in the N-way one-way tissue by chemical fibers, repeating the steps (1) to (7) for every 3 times of the N-way one-way tissue, and repeating the steps (1) to (6) for other ways except 3 times of the N-way one-way tissue, wherein N is an integer more than 3;

(9) gum dipping: dewatering canvas grey cloth after passing through a glue groove of heat-insulating coating glue;

(10) heat setting: placing the canvas grey cloth after gum dipping and dehydration in a high-temperature high-pressure steam oven under the conditions of transverse tension and longitudinal free state for heat setting treatment;

(11) post-processing: and (3) sewing or weaving the canvas blank subjected to the heat setting treatment into a canvas fabric product, and washing and drying for 2-3 times.

2. The method for producing a heat insulating canvas fabric according to claim 1, wherein the chemical fibers are one or more of terylene, acrylic, spandex and nylon, and the chemical fiber materials of adjacent even paths in the N-path single-path structure are the same or different.

3. A method of producing an insulating canvas fabric as claimed in claim 1, in which the cotton, hemp or chemical fibre is used in one or more than one ply.

4. A method for producing an insulating canvas fabric as claimed in claim 1, in which in step (8) adjacent 3 times the number of the N single passes of the fabric are of the same or 1-3 needles behind the non-selected needles.

5. The method for producing a heat insulation canvas fabric according to claim 1, wherein in the step (9), the dipping speed is 1.3-2 m/min, the dipping temperature is 110-120 ℃, the heat setting temperature in the step (10) is 190-210 ℃, and the heat setting time is 10-20 min.

6. The production method of the heat insulation canvas fabric according to any one of claims 1 to 5, wherein in the step (9), the heat insulation coating glue is prepared from vae emulsion, ethyl acetate, nano titanium dioxide, tin antimony oxide, silicon dioxide and a sizing aid in a mass ratio of 25:5:6:4: 3: 0.3 mixing.

7. The method for producing the heat insulation canvas fabric according to claim 6, wherein the sizing aid is formed by mixing a softening agent SG, a penetrating agent JFC and an anti-pilling agent YY-023 according to a mass ratio of 4:5: 1.

Technical Field

The invention relates to a production method of a heat-insulating canvas fabric, and belongs to the technical field of canvas fabrics.

Background

The canvas is a thick cotton fabric or linen fabric, generally adopts plain weave or a small amount of twill weave, the warp and weft yarns are formed by adopting a multi-strand yarn structure and generally divided into two categories of coarse canvas and fine canvas, the coarse canvas is generally used in the fields of automobile transportation, open-air covering and the like, and the fine canvas can be used as case fabrics, handbags, backpacks, tablecloths and the like after being dyed or printed. When the canvas material uses as heat preservation or heat shield occasion, current canvas fabric only adopts longitude and latitude to intersect vertical structure, need additionally sew up thermal-insulated or insulation material, and not only waste time and energy makes the cost-push of fabric, leads to the producer to produce loaded down with trivial details, and the laminating degree of thermal insulation material and canvas fabric plane materiel is not high, easily produces the damage in long-term use, has influenced canvas fabric's bending property, leads to wholly accomodate the difficulty.

Disclosure of Invention

The invention aims to provide a method for producing a heat-insulating canvas fabric aiming at the defects of the prior art.

The invention is realized by the following technical scheme:

a production method of a heat insulation canvas fabric comprises the following steps:

(1) feeding yarns: cotton or hemp threads and chemical fibers are sent to a knitting area of a knitting machine by traction;

(2) ring withdrawing: the knitting needle rises, and a sinker throat of the knitting machine holds the old loop to enable the old loop to be separated from the needle hook to the needle rod;

(3) narrowing: the knitting needle retreats from the highest point to a narrowing plane, and cotton threads, hemp threads or chemical fibers transferred to a needle arc due to the circle retreating are withdrawn;

(4) yarn laying: the yarn guide arris of the knitting machine is positioned between the knitting needle and the nose of the sinker, and the knitting needle leads out new cotton threads, hemp threads or chemical fiber pads from the yarn guide and enters the lower part of the needle hook;

(5) yarn bending: the knitting needle descends to enable the needle hook to contact cotton, linen or chemical fiber to gradually bend yarn and continue to form a new coil, and the lug of the sinker leaves the knitting needle;

(6) looping: the knitting needle descends, and the old coil pushes the latch to close to form a new coil;

(7) needle selection: adjacent knitting needles with 1 or 2 needles at intervals are selected to participate in knitting, loops are withdrawn, new cotton threads, hemp threads or chemical fibers are padded, and the adjacent knitting needles are withdrawn from work without selecting the 1 or 2 needles, so that the old loops are retained in needle hooks;

(8) drawing: pulling off an old coil and a formed new coil, pulling the old coil and the formed new coil to the back of a latch needle, separating from a knitting area, repeating the steps (1) to (6) or the steps (1) to (7) to form a one-way tissue, circularly knitting N-way tissues to obtain a canvas blank, knitting odd-numbered ways in the N-way one-way tissue by cotton threads or hemp threads, knitting even-numbered ways in the N-way one-way tissue by chemical fibers, repeating the steps (1) to (7) for every 3 times of the N-way one-way tissue, and repeating the steps (1) to (6) for other ways except 3 times of the N-way one-way tissue, wherein N is an integer more than 3;

the chemical fiber is one or more of terylene, acrylic fiber, spandex and nylon, and the chemical fiber materials of adjacent even paths in the N-path one-path structure are of the same type or different types;

the dosage of the cotton thread, the hemp thread and the chemical fiber is one strand or a plurality of strands;

the unselected needles of the adjacent 3 times of the N paths of single-path tissues have the same number or lag behind 1-3 needles;

(9) gum dipping: dewatering canvas grey cloth after passing through a glue groove of heat-insulating coating glue;

the gum dipping speed is 1.3-2 m/min, and the gum dipping temperature is 110-120 ℃;

the heat-insulating coating adhesive is prepared from vae emulsion, ethyl acetate, nano titanium dioxide, tin antimony oxide, silicon dioxide and a shaping auxiliary agent in a mass ratio of 25:5:6:4: 3: 0.3 mixing;

the sizing aid is formed by mixing a softening agent SG, a penetrating agent JFC and an anti-pilling agent YY-023 according to the mass ratio of 4:5: 1;

(10) heat setting: placing the canvas grey cloth subjected to gum dipping and dehydration in a high-temperature high-pressure steam oven under the conditions of transverse tension and longitudinal free state, and carrying out heat setting treatment, wherein the heat setting temperature is 190-210 ℃, and the heat setting time is 10-20 min;

(11) post-processing: and (3) sewing or weaving the canvas blank subjected to the heat setting treatment into a canvas fabric product, and washing and drying for 2-3 times.

The invention has the beneficial effects that:

(1) 1 needle or 2 needles between adjacent knitting needles are not selected and quit working, so that cotton threads, hemp threads or chemical fibers are left on the knitting needle surface which does not participate in knitting in a floating line shape, the gap space of a tissue piece is increased, gum dipping and film forming are facilitated, the detachability is small, and the heat insulation effect and the stability are improved;

(2) one or more strands of cotton threads, hemp threads or chemical fibers are adopted for weaving, the tension of the chemical fiber yarn feeding can be adapted, the stable and compact looping of the yarn is ensured, the operation of a needle hook is reliable, the surface of the fabric is flat, the defect rate is reduced, and the comprehensive utilization performance is realized;

(3) the number of the adjacent 3 times of the N single-path tissues is the same or lags behind by 1-3 needles, different requirements of the canvas fabric on vertical and longitudinal stretching or transverse and longitudinal tension application occasions are met after gum dipping, the vae emulsion ethyl acetate and the sizing auxiliary agent have high film forming property and adhesion, the heat conductivity is reduced with nano titanium dioxide, tin antimony oxide and silicon dioxide, the heat insulation effect is achieved, after sizing, the transverse and longitudinal structure is compact, the retraction rate is small, and therefore the heat insulation stability is improved and the production procedures are reduced under the condition that the bending performance of the canvas fabric is guaranteed.

Drawings

Fig. 1 is a weave diagram of example 1.

Fig. 2 is a weave diagram of example 2.

Fig. 3 is a weave diagram of example 3.

The labels in the figure are: cotton thread a, hemp thread b, terylene c, acrylic fiber d, spandex e and nylon f.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.