JP2014128785A - Method for making filter mesh of stockinet stitch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for making a filter mesh of stockinet stitch.SOLUTION: A filtering mesh bag is formed by knitting a mesh sleeve 1 with both ends opened, and furthermore by heat sealing a sleeve around it. A thermoplastic membrane 3 is added depending on materials of a filter mesh, and/or the heat sealing is performed after reinforcing a portion to be heat sealed, thereby forming a bottom part of the filter mesh with certain strength to complete the present invention. The present invention eliminates the need for making a bottom by an over clock machine, and can improve production efficiency by adopting a heat seal technique to knit the filter mesh. Also, raw materials are saved and the pollution to an environment is reduced, resulting in cost reduction. Also, the stockinet stitch product by the method of the present invention is made soft, so that adhesion to sewerage in an actual usage is better than that of a polyethylene filter mesh bag by the polyethylene extrusion molding. According to the method for making the stockinet stitch filter mesh bag of the present invention, the environmental pollution can be greatly reduced.

Description

  The present invention relates to the field of household goods, and more particularly to a method for processing a knitted filter screen.

  In everyday life, it was almost for everyone that kitchen sewers were always plugged with rice grains and vegetables left over when washing rice, and shower sewers were always covered with hair or plastic bags. And this brought great inconvenience to our lives. Therefore, knitted filter nets are gradually entering our daily lives and are becoming important products in the field of household goods. The main method for manufacturing an existing filter net bag is to first knit a net bag having both ends opened by a sock knitting machine, and then surging it with a surging machine to make a bottom. Such a production system is not high in work efficiency. Further, a large amount of waste is generated during surging, which not only wastes raw materials but also burdens the company's waste treatment system. Further, since it is necessary to cut the end of the thread after surging, the time study is improved and the operation cost is improved.

  Furthermore, there is a known method for producing a PE mesh filter screen with a high processing speed and a low cost, but this is disadvantageous for the environment, and this filter screen has poor adhesion to sewers during use. So you will be deceived soon again.

  An object of the present invention is to provide a method for processing a knitted filter net in order to solve one or more problems in the prior art.

  According to one aspect of the present invention, the processing method of the knitted filter net according to the present invention includes a step S1 of knitting a net-like sleeve having both ends opened by a knitting machine, and forming the bottom by heat-sealing the sleeve. Step S2 of manufacturing a knitted filter net.

  In an embodiment, in step S2, the heat sealing is performed after adding a thermoplastic material, and when the heat sealing is performed, the thermoplastic material is integrated with the sleeve. A thermoplastic material is added during heat sealing so that the heat sealed bottom is more secure.

  In one embodiment, the sleeve material is selected from thermoplastic fibers. The raw material is optimized, and it is beneficial to the subsequent production smoothly, and the cost can be reduced. In this embodiment, as an optimization, heat sealing directly heats the sleeve in S2.

  In one embodiment, a reinforcing portion is provided at a location where the sleeve is heat-sealed. Further, the effect is more preferable when the bottoming strength is reinforced by heat sealing and used in combination with a thermoplastic material such as a thermoplastic film.

  In one embodiment, in step S1, two filter screen bags are formed by heat sealing, and then divided into two filter screens at the heat sealed site. Further improve production efficiency.

  In an embodiment, in S2, the heat seal employs a microwave heat seal. This heating method is highly controllable and reliable, and represents the future direction of heat seal development.

  The present invention does not require the creation of a bottom with an overclocking machine, and it is possible to improve the production efficiency by adopting heat sealing technology and knitting a filtration net, while saving raw materials, reducing environmental pollution, and reducing costs. Leads to. Moreover, since the knitted product by the method of the present invention becomes soft, the adhesion to the sewer is better than the PE filter net bag by PE extrusion molding during actual use. In the PE filtration net bag, it is necessary to add a large amount of a plasticizer that harms the environment in order to provide the softness of the product according to the present invention. On the other hand, according to the processing method of the knitted knitted filter net bag of the present invention, environmental pollution can be greatly reduced.

The perspective view which shows the net-like sleeve used for the processing method of the knitted filter net of Example 1. The perspective view which shows the net-like sleeve used for the processing method of the knitted filter net of Example 2. The perspective view which shows the net-like sleeve used for the processing method of the knitted filter net of Example 3. The perspective view which shows the net-like sleeve used for the processing method of the knitted filter net of Example 4.

Example 1:
The present invention
(1) As shown in FIG. 1, a 20D terylene monofilament is used as a main raw material, a 200-needle sock knitting machine is used to knit a net-like sleeve 1 with both ends open, and elastic fibers are added to both ends. A step in which an elastic expansion / contraction port 4 is formed and a reinforcing portion 2 is provided around the middle portion of the sleeve 1;
(2) Adopting heat sealing technology using microwaves, adjusting an appropriate heat sealing temperature and heat sealing time, heat sealing the reinforcing portion 2 of the sleeve 1 with the thermoplastic film 3, Using the thermoplastic adhesive molding of the thermoplastic film 3, the thermoplastic film 3 and the sleeve 1 at the heat-sealed portion are integrated to form a ribbon-shaped seal strip, and the heat seal strip is formed by a high-temperature mold. Cutting from an intermediate line to form a knit knitted filter net made of two heat seal bottoms;
A method for processing a knit knitted filter net is provided.

  In knitting the filter back, there are generally knit machines such as a sock knitting machine, a warp knitting machine, and a knitted small circular weaving machine. In this embodiment, a sock knitting machine is taken as an example. Generally, there are various sock knitting machines of 100 to 500 needles that can be used. In this embodiment, 200 needles are taken as an example. As the main raw material, various chemical fiber yarns of 10 to 100D are generally selected, and 20D terylene monofilament is relatively used. In this embodiment, 20D terylene monofilament is taken as an example. The reinforcing portion 2 described in the present invention means a portion where the fiber density is relatively high, and the reinforcing portion 2 in the present embodiment adjusts an appropriate process knitting during production to make the mesh more dense than other portions. Means number. In addition, in order to achieve the purpose of increasing the fiber density, the reinforcing portion 2 in the present invention may be made by a portion that is folded and heat sealed.

  The “around the middle” of the sleeve 1 described in the present embodiment (provided with the reinforcing portion 2) is an optimal embodiment for processing a knitted filter screen, and the present invention is further completely “ The reinforcing portion 2 may not be provided around the middle portion of the sleeve 1 and may be slightly different. In the present invention, two knitted filter nets having different lengths may be formed after heat sealing of the reinforcing portion 2, and the reinforcing portion 2 may not be provided at all “around the middle of the sleeve”. , May be slightly different. The “bottoming” in the present invention is based on the fact that the present invention can be carried out, and there is no restriction on the position where heat sealing is performed.

  Since the method of heat sealing after covering the thermoplastic film 3 was adopted, the present material is used regardless of whether the fiber raw material is thermoplastic or whether the reinforcing portion 2 is adopted in the heat sealed portion. The invention can be completed. Of course, if the reinforcing material 2 is employed where the fiber raw material itself is thermoplastic or heat-sealed, the formed heat-sealed bottom is stronger and stiffer.

The purpose of providing the reinforcing portion 2 at the heat seal location is to further reinforce the strength of making the heat seal bottom. When the thermoplastic film 3 is provided, the heat seal location fiber structure and the thermoplastic film are bonded. It can be made more robust. When the fiber raw material used in the present invention has thermoplasticity, the present invention can be completed even if the reinforcing portion 2 is provided at the heat-sealed portion and the contribution of the thermoplastic film 3 is not required. . If the fiber material used is thermoplastic, adjust the appropriate process conditions to knit a net bag with a relatively coarse fiber or a relatively dense mesh, and create a heat-sealed bottom directly. However, this is a relatively large consumption of raw materials, and the heat sealing effect is not different from some of the previous technical proposals.
Each of the following embodiments is a slight modification to the first embodiment with reference to the above description.

Example 2:
The present invention
(1) As shown in FIG. 2, using a 40D terylene monofilament as a main raw material, a 300-needle sock knitting machine is used to knit a net-like sleeve 1 having both ends open, and elastic fibers are added to both ends. A step in which an elastic expansion / contraction port 4 is formed and a reinforcing portion 2 is provided around the middle portion of the sleeve 1;
(2) Adjusting an appropriate heat sealing temperature and heat sealing time, heat sealing the reinforcing part 2, and forming a ribbon-shaped heat sealing strip using thermoplastic adhesive molding of terylene monofilament in the reinforcing part 2 Cutting from the middle line of the heat seal strip to form two heat-sealed bottom knitted filter nets;
A method for processing a knit knitted filter net is provided.

Example 3:
The present invention
(1) As shown in FIG. 3, using a 20D nylon filament as a main raw material, a warp knit machine is used to knit a reticulated sleeve 1 that is open at both ends, and a reinforcing portion 2 is provided around one end of the sleeve 1, A step in which elastic fiber is added to the other end to form elastic elastic opening 4;
(2) Adjusting an appropriate heat sealing temperature and heat sealing time, heat sealing one end of the reinforcing part 2, and forming a ribbon-shaped heat sealing strip by using thermoplastic adhesive molding of nylon in the reinforcing part 2 And forming a heat-sealed bottom knit knitted filter net,
A method for processing a knit knitted filter net is provided.

Example 4:
The present invention
(1) As shown in FIG. 4, a 60D terylene yarn is used as a main raw material, a 200-needle sock knitting machine is used to knit a mesh sleeve 1 with both ends open, and elastic fibers are added to both ends to add two elasticities A step in which the expansion / contraction port 4 is formed and a reinforcing portion is provided around the middle portion of the sleeve;
(2) An appropriate heat sealing temperature and heat sealing time are adjusted, the middle part of the sleeve 1 is heat sealed by the thermoplastic film 3 and heat sealing molding is performed, and then the thermoplastic film 3 and the sleeve 1 at the heat sealing location And forming a ribbon-shaped heat-seal strip and cutting from the middle line of the heat-seal strip to form two heat-sealed knitted filter nets;
A method for processing a knit knitted filter net is provided.

Example 5:
The present invention
(1) 100D terylene yarn as the main raw material, adopting a 500-needle sock knitting machine, knitting a net-like sleeve with open ends and a reasonable number of meshes, adding elastic fibers to one end, and an elastic expansion / contraction opening A step of forming
(2) adjusting an appropriate heat-sealing temperature and heat-sealing time, and forming a heat-sealed knitted filter net on the other end of the heat-seal sleeve of the thermoplastic film using chemical fibers; ,
A method for processing a knit knitted filter net is provided.

Example 6: (no raw material restriction + thermoplastic film + reinforcement part + middle part)
The present invention
(1) A knitted mesh sleeve with a knitted small circular weaving machine is used to knit a mesh sleeve with both ends open, elastic fibers are added to both ends to form an elastic expansion / contraction opening, and a reinforcing part is provided around the middle of the sleeve Steps
(2) Adjusting an appropriate heat sealing temperature and heat sealing time, the thermoplastic film is heat-sealed to the reinforcing portion of the sleeve, and the thermoplastic film at the heat-sealed portion is utilized by using thermoplastic adhesive molding of the thermoplastic film. Forming a ribbon-like seal strip and cutting from the middle line of the seal strip to form a two heat-sealed knitted filter mesh;
A method for processing a knit knitted filter net is provided.

Example 7:
The present invention
(1) Adopting a 400-needle sock knitting machine, knitting a mesh sleeve with a reasonable number of openings, adding elastic fibers to one end, and forming an elastic expansion / contraction opening;
(2) Adjusting the appropriate heat seal temperature and heat seal time, the other end of the sleeve is heat sealed by the thermoplastic film, and the thermoplasticity at the heat seal location is made using the thermoplastic adhesive molding of the thermoplastic film. A step in which the membrane and the sleeve are united to form a knitted filter net for making a heat seal bottom;
A method for processing a knit knitted filter net is provided.

Claims (7)

Step S1 of knitting a net-like sleeve having both ends opened by a knitting machine;
Forming a bottom by heat-sealing the sleeve, and producing a knitted filter net;
A processing method for a knit knitted filter net.   2. The heat sealing in step S2 is performed after adding a thermoplastic material, and the thermoplastic material is integrated with the sleeve when the heat sealing is performed. The processing method of the filtration net | network of the knitted knitting described in 2.   2. The method of processing a knitted filter net according to claim 1, wherein the material of the sleeve is a fiber having thermoplasticity.   The method for processing a knitted filter net according to claim 3, wherein in the step S2, the sleeve is directly heat-sealed when the heat-sealing is performed.   The method for processing a knitted filter net according to claim 2 or 3, wherein a reinforcing portion is provided at a portion of the sleeve to be heat sealed.   In the step S2, two filter screen bags are formed by heat sealing, and are divided into two filter screens at the heat-sealed portion. Processing method of knitted filter net.   The method for processing a knitted filter net according to claim 1, wherein, in the step S2, the heat seal is a heat seal using a microwave.

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