阅读说明：本技术 防水透气tpu薄膜加工工艺 (Waterproof and breathable TPU film processing technology ) 是由 王方明 王徐涛 于 2019-09-12 设计创作，主要内容包括：本发明公开一种防水透气TPU薄膜加工工艺,该技术方案的特点在于包括以下步骤,四个口径为30～50mm的熔喷头上连接有四向平移机构并通过四向平移机构连接在机架上,在熔喷头处设置控温加热装置,将熔喷头温度可调设置在130～180℃,取聚氨酯TPU母粒改性熔解后经由熔喷头进行喷丝作业,喷丝过程中熔喷头交替进行前后向和左右向的平移,以此来进行往复喷丝；喷丝完成后的网络状TPU经冷却辊轻压成膜状；将压成膜装的TPU膜经热压辊重压延展成均匀薄膜,本发明相比于现有技术的优点在于,以四向往复喷丝的方法进行喷丝,使得压制形成膜由网状结构层叠获得,从而使得薄膜内具有纵横交替的缝隙,在相互封闭保证良好防水性能的前提下还具有良好的透气性能。(The present invention discloses a kind of waterproof and breathable TPU film processing technology, the characteristics of technical solution, is to include the following steps, it is connected with four-way translation mechanism on the melt-blown head that four bores are 30~50mm and is connected on the rack by four-way translation mechanism, temperature control heating device is set at melt-blown head, by the adjustable setting of molten nozzle temperature at 130~180 DEG C, through carrying out spinneret operation by melt-blown head after taking polyurethane TPU master batch is modified to melt, be meltblown in spinning process head alternately front and back to left and right to translation, reciprocal spinneret is carried out with this；Network-like TPU after the completion of spinneret is gently pressed into membranaceous through chill roll；The TPU membrane for being pressed into film dress is transformed into uniform film through hot-pressing roller heavy calendered multiple, the present invention compared with the prior art the advantages of be, spinneret is carried out in the method for the reciprocal spinneret of four-way, so that compacting, which forms film, is laminated acquisition by reticular structure, so that having alternate gap in length and breadth in film, also there is good permeability under the premise of mutual closing guarantees good waterproof performance.)

1. a kind of waterproof and breathable TPU film processing technology, it is characterised in that: the following steps are included:

1) the melt-blown head point column that four bores are 30~50mm are chosen and are mounted on the rack composition spinneret complete machine；

2) it is meltblown on head and is connected with four-way translation mechanism and is connected on the rack by four-way translation mechanism；

3) temperature control heating device is set at melt-blown head, by the adjustable setting of molten nozzle temperature at 130~180 DEG C；

4) through carrying out spinneret operation by melt-blown head after taking polyurethane TPU master batch is modified to melt, in spinning process melt-blown head alternately into Row front and back to left and right to translation, reciprocal spinneret is carried out with this；

5) the network-like TPU after the completion of spinneret is gently pressed into membranaceous through chill roll；

6) TPU membrane for being pressed into film dress is transformed into uniform film through hot-pressing roller heavy calendered multiple.

2. waterproof and breathable TPU film processing technology according to claim 1, it is characterised in that: carry out spinneret in step 4 When, head first reciprocal spinneret 5~10 times of front and back are meltblown, then the reciprocal spinneret in left and right 5~10 times.

3. waterproof and breathable TPU film processing technology according to claim 1, it is characterised in that: the poly- ammonia used in step 4 Ester master batch is the modified polyurethane master batch of hardness 80%.

4. waterproof and breathable TPU film processing technology according to claim 1, it is characterised in that: the temperature of chill roll in step 5 Degree is set as 0~6 DEG C.

5. waterproof and breathable TPU film processing technology according to claim 1, it is characterised in that: the hot-pressing roller in step 6 is Infrared ray wave band hot-pressing roller.

6. waterproof and breathable TPU film processing technology according to claim 5, it is characterised in that: the infrared ray wave band heat The temperature setting of pressure roller is 80~100 DEG C.

7. waterproof and breathable TPU film processing technology according to claim 1, it is characterised in that: the weight operation in step 6 It is reciprocal weight 2 times.

Technical field

The present invention relates to a kind of TPU processing technologys, specifically, designing a kind of waterproof and breathable TPU film processing technology.

Background technique

The entitled thermoplastic polyurethane elastomer rubber of TPU is a kind of novel organic polymer synthetic material, can replace For rubber or soft polyvinyl chloride material, good wearability, resilience is superior to conventional polyurethanes, and ageing-resistant performance is better than Rubber, it may be said that TPU is the optimal material for substituting PVC and PU, is known as novel polymer material in the world.Its molecule Structure is that the hard block obtained by diisocyanate and chain extender reaction and diisocyanate are reacted with macromolecular polyol What obtained soft segment was alternately constituted.TPU has brilliant high-tension, high-tensile strength, tough and anti-aging property, answers extensively For health care, electronic apparatus and sports goods etc..

TPU film is most widely used garment industry, is mainly used for being compounded in web surface as wind and water preventing layer, Traditional TPU film surface compact has good wind and water preventing effect, but gas permeability is longer, and wearer can be allowed to feel sultry, Be not suitable for long-term dress.

Summary of the invention

Goal of the invention: present invention aims in view of the deficiencies of the prior art, provide a kind of waterproof and breathable TPU film processing Technique.

A kind of technical solution: waterproof and breathable TPU film processing technology of the present invention, comprising the following steps:

1) the melt-blown head point column that four bores are 30~50mm are chosen and are mounted on the rack composition spinneret complete machine；

2) it is meltblown on head and is connected with four-way translation mechanism and is connected on the rack by four-way translation mechanism；

3) temperature control heating device is set at melt-blown head, by the adjustable setting of molten nozzle temperature at 130~180 DEG C；

4) through carrying out spinneret operation by melt-blown head after taking polyurethane TPU master batch is modified to melt, melt-blown head is handed in spinning process For carry out front and back to left and right to translation, reciprocal spinneret is carried out with this；

5) the network-like TPU after the completion of spinneret is gently pressed into membranaceous through chill roll；

6) TPU membrane for being pressed into film dress is transformed into uniform film through hot-pressing roller heavy calendered multiple.

Preferably, first reciprocal spinneret 5~10 times of front and back of melt-blown head, then left and right is reciprocal when carrying out spinneret in step 4 Spinneret 5~10 times.

Preferably, the polyurethane master batch used in step 4 is the modified polyurethane master batch of hardness 80%.

Preferably, the temperature setting of chill roll is 0~6 DEG C in step 5.

Preferably, the hot-pressing roller in step 6 is infrared ray wave band hot-pressing roller.

Preferably, the temperature setting of the infrared ray wave band hot-pressing roller is 80~100 DEG C.

Preferably, the weight operation in step 6 is reciprocal weight 2 times.

The present invention has the advantages that (1) using multipoint mode meltblown, production efficiency and production compared with the prior art It can all be significantly increased；

(2) using bore is the spout of 30~50mm as melt-blown head, and spinneret is thinner, and the TPU film structure produced is more Densification, waterproof performance is more preferable, and more preferably with spinneret temperature and the suitability of pressure；

(3) spinneret is carried out in the method for the reciprocal spinneret of four-way, so that compacting, which forms film, is laminated acquisition by reticular structure, thus So that having alternate gap in length and breadth in film, also have under the premise of mutual closing guarantees good waterproof performance good Gas performance；

(4) the press mold operation that hot-pressing roller weight after first chill roll is gently pressed is carried out after the completion of spinneret, so that TPU film obtained Thickness is uniform, and elasticity is more preferable.

Specific embodiment

Technical solution of the present invention is described in detail below, but protection scope of the present invention is not limited to the implementation Example.

A kind of waterproof and breathable TPU film processing technology, comprising the following steps:

1) the melt-blown head point column that four bores are 30~50mm are chosen and are mounted on the rack composition spinneret complete machine；

2) it is meltblown on head and is connected with four-way translation mechanism and is connected on the rack by four-way translation mechanism；

3) temperature control heating device is set at melt-blown head, by the adjustable setting of molten nozzle temperature at 130~180 DEG C；

4) through carrying out spinneret operation, spinneret by melt-blown head after taking the modified polyurethane TPU master batch of hardness 80% is modified to melt In the process melt-blown head alternately front and back to left and right to translation, reciprocal spinneret is carried out with this；

5) the network-like TPU after the completion of spinneret is gently pressed into membranaceous through 0~6 DEG C of chill roll；

6) TPU membrane for being pressed into film dress is extended through 80~100 DEG C of infrared ray wave band hot-pressing roller weight 2 times into uniform film.

The advantages of invention, is (1) using multipoint mode meltblown, and production efficiency and production capacity are all significantly increased；

(2) using bore is the spout of 30~50mm as melt-blown head, and spinneret is thinner, and the TPU film structure produced is more Densification, waterproof performance is more preferable, and more preferably with spinneret temperature and the suitability of pressure；

(3) spinneret is carried out in the method for the reciprocal spinneret of four-way, so that compacting, which forms film, is laminated acquisition by reticular structure, thus So that having alternate gap in length and breadth in film, also have under the premise of mutual closing guarantees good waterproof performance good Gas performance；

(4) the press mold operation that hot-pressing roller weight after first chill roll is gently pressed is carried out after the completion of spinneret, so that TPU film obtained Thickness is uniform, and elasticity is more preferable.

Use TPU breathable films made from this method that can be formed anti-to heat glue point patch composite chemical fibre cloth or interwoven Water airing function fabric has while guaranteeing has good water proof wind proof performance using the TPU film as fabric outer layer Have excellent permeability, solve the traditional sultry drawback of the fabric, simultaneously as in network TPU gap presence, this Kind of TPU breathable films have good dyeability, can print and dye more colors as garment material, more beautiful.

As described above, must not be explained although the present invention has been indicated and described referring to specific preferred embodiment For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right Various changes can be made in the form and details for it.