阅读说明：本技术 一种嵌件式一体热压成型无纺布的制备方法 (Preparation method of insert type integrated hot-press forming non-woven fabric ) 是由 王惠荣 朱欢 于 2019-09-02 设计创作，主要内容包括：本发明公开了一种嵌件式一体热压成型无纺布的制备方法,该制备方法共包括选择无纺布、无纺布加热、无纺布加压成型、加入骨架嵌件和嵌件定位共5个步骤；采用由质量百分数为100%的PET材料制成的无纺布；采用两块热铝板对无纺布进行接触式加热,所述热铝板的温度加热后达到100℃～160℃；将经过加热步骤后的无纺布放置在成型模具上,然后将无纺布加压成型；先把骨架嵌件放置在事先做好的模具上,然后再把加压成型后的无纺布产品套到已加入骨架嵌件的模具上；使用热合工艺将无纺布与嵌件进行定位,一次将多个嵌件凸台进行热合。本发明是一种成本低廉、制作工序简便、成型效果较好的嵌件式一体热压成型无纺布的制备方法。(The invention discloses a preparation method of an insert type integrated hot-press forming non-woven fabric, which comprises 5 steps of selecting the non-woven fabric, heating the non-woven fabric, carrying out pressure forming on the non-woven fabric, adding a skeleton insert and positioning the insert; non-woven fabrics made of PET materials with the mass percentage of 100 percent are adopted; carrying out contact heating on the non-woven fabric by adopting two hot aluminum plates, wherein the temperature of the hot aluminum plates reaches 100-160 ℃ after heating; placing the non-woven fabric subjected to the heating step on a forming die, and then pressing and forming the non-woven fabric; firstly, placing the skeleton insert on a pre-made mould, and then sleeving the non-woven fabric product subjected to pressure forming on the mould added with the skeleton insert; and (3) positioning the non-woven fabric and the inserts by using a heat sealing process, and performing heat sealing on a plurality of insert bosses at one time. The invention is a preparation method of the insert type integrated hot-press forming non-woven fabric with low cost, simple and convenient manufacturing process and better forming effect.)

1. A preparation method of an insert type integrated hot-press forming non-woven fabric is characterized by comprising the following steps: the preparation method of the insert type integrated hot press molding non-woven fabric specifically comprises 5 steps of selecting the non-woven fabric, heating the non-woven fabric, pressurizing and molding the non-woven fabric, adding the skeleton insert and positioning the insert;

(1) selecting non-woven fabrics:

non-woven fabrics made of PET materials with the mass percentage of 100 percent are adopted;

(2) heating non-woven fabrics:

the non-woven fabric is heated in a contact mode through two hot aluminum plates, the temperature of the hot aluminum plates for heating the non-woven fabric is controlled through a contact thermocouple, and the temperature of the hot aluminum plates reaches 100-160 ℃ after being heated;

(3) non-woven fabric pressure forming:

placing the non-woven fabric subjected to the heating step on a forming die, and then pressing and forming the non-woven fabric;

(4) adding a skeleton insert:

firstly, placing the skeleton insert on a pre-made mould, and then sleeving the non-woven fabric product subjected to pressure forming on the mould added with the skeleton insert;

(5) positioning the insert:

and (3) positioning the non-woven fabric and the inserts by using a heat sealing process, and performing heat sealing on a plurality of insert bosses at one time.

2. The method for preparing the insert-type integrated hot press molding non-woven fabric according to claim 1, characterized in that: in the step (1), the low-melting-point PET in the non-woven fabric component accounts for 40-50% of the mass percent of all PET materials.

3. The method for preparing the insert-type integrated hot press molding non-woven fabric according to claim 1, characterized in that: in the step (2), the specific operation method for heating the non-woven fabric in a contact manner by using two aluminum plates comprises the following steps: the non-woven fabric is placed between the two hot aluminum plates, the surfaces of the two hot aluminum plates carry out contact heating on the non-woven fabric, and the heat source of the hot aluminum plates is an electric heating pipe.

4. The method for preparing the insert-type integrated hot press molding non-woven fabric according to claim 1, characterized in that: in the step (3), the pressure is 500kg to 5000kg during the process of pressure forming the non-woven fabric, and the pressure dwell time for each pressure forming is 15s to 30 s.

Technical Field

The invention belongs to the technical field of preparation methods of insert type non-woven fabrics, and particularly relates to a preparation method of an insert type integrated hot press molding non-woven fabric.

Background

Nonwoven fabrics, also known as nonwovens, are composed of oriented or random fibers, usually polypropylene, which are produced as a nonwoven fabric by air-laying or mechanically laying the fibers directly from polymer chips, staple fibers or filaments, hydroentangling, needling or hot-rolling, and finishing. The non-woven fabric is a novel fiber product with soft, air-permeable and plane structure, and has the advantages of no generation of fiber scraps, toughness, durability, silky softness, cotton feeling and reinforcement.

When the non-woven fabric is used as a reinforcing material, the non-woven fabric is usually made into an insert non-woven fabric, the insert non-woven fabric in the prior art is all made by sewing steel wires into the non-woven fabric, and the preparation method of the insert non-woven fabric in the prior art comprises the following steps: firstly, cutting the shape of the non-woven fabric, secondly, sewing the non-woven fabric at the position with the shape, then cutting the steel wire, inserting the cut steel wire into the non-woven fabric after sewing, and finally forming the shape of the insert non-woven fabric by the steel wire, but the insert non-woven fabric in the prior art has a plurality of defects: firstly, the process is more complicated, the non-woven fabric needs to be subjected to the sewing process, secondly, the forming effect of adopting the steel wire for forming is not ideal, and the insert material used in the manufacturing process of the insert non-woven fabric in the prior art is more, so that the cost of the insert non-woven fabric is higher. Based on the defects in the prior art, a new process needs to be designed, so that the insert type non-woven fabric has the advantages of low cost, simple and convenient manufacturing process, good forming effect and the like.

Disclosure of Invention

The invention provides a preparation method of an insert type integrated hot press forming non-woven fabric, which is low in cost, simple and convenient in manufacturing process and good in forming effect, and aims to overcome the defects in the prior art.

The invention is realized by the following technical scheme: a preparation method of an insert type integrated hot-press forming non-woven fabric specifically comprises 5 steps of selecting the non-woven fabric, heating the non-woven fabric, carrying out pressure forming on the non-woven fabric, adding a skeleton insert and positioning the insert;

(1) selecting non-woven fabrics: non-woven fabrics made of PET materials with the mass percentage of 100 percent are adopted;

(2) heating non-woven fabrics: two hot aluminum plates are adopted to heat the non-woven fabric in a contact way, the temperature of the hot aluminum plates for heating the non-woven fabric is controlled by a contact thermocouple, and the temperature of the hot aluminum plates reaches 100-160 ℃ after being heated;

(3) non-woven fabric pressure forming: placing the non-woven fabric subjected to the heating step on a forming die, and then pressing and forming the non-woven fabric;

(4) adding a skeleton insert: firstly, placing the skeleton insert on a pre-made mould, and then sleeving the non-woven fabric product subjected to pressure forming on the mould added with the skeleton insert;

(5) positioning the insert: and (3) positioning the non-woven fabric and the inserts by using a heat sealing process, and performing heat sealing on a plurality of insert bosses at one time.

Preferably, in the step (1), the low-melting-point PET in the non-woven fabric component accounts for 40-50% of the mass percent of all PET materials.

Preferably, in the step (2), the non-woven fabric is heated by contact heating with two aluminum plates by a specific operation method comprising: the non-woven fabric is placed between the two hot aluminum plates, the surfaces of the two hot aluminum plates carry out contact heating on the non-woven fabric, and the heat source of the hot aluminum plates is an electric heating pipe.

Preferably, in the step (3), the nonwoven fabric is subjected to pressure molding under a pressure of 500kg to 5000kg and a pressure-holding time per pressure molding is 15s to 30 s.

Compared with the prior art, the invention has the following beneficial effects or benefits: the forming effect of the integrated hot-press formed non-woven fabric prepared by the preparation method of the insert integrated hot-press formed non-woven fabric is better than that of the non-woven fabric sewn in the position with the shape in the prior art, and the insert material used by the integrated hot-press formed non-woven fabric prepared by the preparation method of the insert integrated hot-press formed non-woven fabric is less than that used by the existing hot-press formed non-woven fabric in the prior art, so that the cost of the manufactured insert integrated non-woven fabric is lower. Therefore, the invention is a preparation method of the insert type integrated hot press forming non-woven fabric, which has the advantages of low cost, simple and convenient manufacturing process and better forming effect.

Detailed Description

The present invention will be described in detail with reference to specific embodiments.

A preparation method of an insert type integrated hot-press forming non-woven fabric specifically comprises 5 steps of selecting the non-woven fabric, heating the non-woven fabric, carrying out pressure forming on the non-woven fabric, adding a skeleton insert and positioning the insert;

(1) selecting non-woven fabrics: the PET material is prepared into non-woven fabric by 100% by mass, wherein the low-melting-point PET in the non-woven fabric accounts for 40-50% of all the PET materials by mass.

(2) Heating non-woven fabrics: two hot aluminum plates are adopted to carry out contact heating on the non-woven fabric, and the specific operation method for carrying out contact heating on the non-woven fabric by adopting the two aluminum plates is as follows: placing the non-woven fabric between two hot aluminum plates, and heating the non-woven fabric in a contact manner on the surfaces of the two hot aluminum plates, wherein the heat source of the hot aluminum plates is an electric heating pipe; controlling the temperature of a hot aluminum plate for heating the non-woven fabric by a contact thermocouple, wherein the temperature of the hot aluminum plate reaches 100-160 ℃ after being heated;

(3) non-woven fabric pressure forming: and placing the non-woven fabric subjected to the heating step on a forming die, and then pressing and forming the non-woven fabric, wherein the pressing pressure is 500 kg-5000 kg in the process of pressing and forming the non-woven fabric, and the pressure maintaining time of each pressing and forming is 15 s-30 s.

(4) Adding a skeleton insert: firstly, placing the skeleton insert on a pre-made mould, and then sleeving the non-woven fabric product subjected to pressure forming on the mould added with the skeleton insert;

(5) positioning the insert: and (3) positioning the non-woven fabric and the inserts by using a heat sealing process, and performing heat sealing on a plurality of insert bosses at one time.

Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.