JPS62151330A - Laminated molding material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be used as a structural material for, for example, soft cases for cameras, Poston/Henk, various bags, hats, etc.
The present invention relates to a laminated molding material that can be integrally molded.

[Conventional technology]

Traditionally, soft cases for cameras, Boston Bank, etc. have been made of vinyl chloride sheets, polyurethane sheets, or natural leather as outer materials, and brushed fabrics, etc. as inner linings.
Urethane foam was used. These two sheet materials were cut and sewn together to make packs and other items. If necessary, parts may be molded or pasted together.

[Problem that the invention seeks to solve]

As mentioned above, the manufacturing of packs using conventional materials,
Processes such as cutting, sewing, partial molding, and pasting are required, which is time-consuming. These steps require skill, and it takes years to achieve a beautiful finish. Another disadvantage is that it is not suitable for mass production.

The present invention aims to solve these problems and provide a laminated molding material that can be mass-produced beautifully and inexpensively by integrally molding banks and the like.

[Means for solving problems]

A laminated molding material to which the present invention is applied in order to solve the problems listed in item L will be explained with reference to FIG. 1 corresponding to an example. As shown in the figure, the laminated molding material 1 has a facing material sheet 2 and a needle-punched nonwoven fabric sheet 3 laminated together. The needle punched nonwoven fabric sheet 3 has a striped area weight of 200 to 600.
31 m2, some of the constituent fibers contain 10 to 60% by weight of thermoplastic fibers that have a lower melting point than the surrounding m-fibers.

[Effect]

Since the laminated molding material 1 of the present invention has a structure in which the sheets 2 and 3 are laminated, it can be integrally molded by heating and pressurizing. Since it contains thermoplastic fibers with a low melting point, integrally molded products (bags, etc.) can maintain their shape appropriately, while providing a soft feel. It is also lightweight.

〔Example〕

Examples 1 to 5 of laminated molding materials to which the present invention is applied will be described in detail below with reference to FIGS. 1 to 3.

Comparative Examples 1 to 4 are examples of laminated molding materials to which the present invention is not applicable.

Example 1 Polyethylene of 3 denier x 64 mm with a melting point of 130°C.
A heat-resistant polyester sheet 3 with a thickness of 200 lm is coated on one side of a needle-punch nonwoven fabric sheet 3 with a stripe weight of 350 g/rn2 and a thickness of 3.5 mm. A molded laminate material 1 having a weight of 610 g/m2 is obtained by laminating a vinyl chloride film (facing material sheet 2) with a synthetic rubber adhesive. After heating this laminated molding material l under appropriate conditions,
As shown in FIG. 2, a female mold 6 is inserted, and a pressure P is applied to the mold 5 for press molding. As a result, the thickness of the single-layer molding material 1 decreases, and a molded article of the laminated molding material 1 as shown in FIG. 3 is formed. The wall thickness of this molded product is approximately 1.1 mm+.

Example 2 Needle punched nonwoven fabric sheet 3 is composed of 30% by weight of low melting point fibers (polyethylene/polypropylene composite [t]) and 70% by weight of normal polyester fibers, and has a striped area of 200g/
The thickness is 2 mm for Otori 2. A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product is approximately 0.9 mm.

Example 3 Needle punched nonwoven fabric sheet 3 contains 40% by weight of low melting point fibers
It is made of 860% by weight of ordinary polyester fibers and has a striped area of 40,031 m2 and a thickness of 4 mm.

A molded article is otherwise produced under the same conditions as in Example i. The wall thickness of the molded product is approximately 1.2 mm.

Example 4 Needle punched nonwoven fabric sheet 3 contains 10% by weight of low melting point fibers
and 90% by weight of ordinary polyester fibers, and has a striped area of 30,031 m2 and a thickness of 3 mm.

A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product is approximately 1.3+am.

Example 5 A needle-punched nonwoven fabric sheet 3 was composed of 60% by weight of low melting point H1i fibers and normal polyester fibers M4o, and had a stripe area of 30031 m2 and a thickness of 3 mm.

A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product is approximately 1 mm.

Comparative Example 1 Needle punched nonwoven fabric sheet 3 contains low melting point fibers of 30%
It is made of 70% by weight of regular polyester fibers, has a striped area of 15031m2, and has a thickness of 1.5ff. A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product will be approximately 0.7o+++.

Comparative Example 2 A needle-punched nonwoven fabric sheet 3 was made of 7% by weight of low melting point M fibers and 93% by weight of ordinary polyester #I fibers, and had a stripe weight of 350 g/s2 and a thickness of 3.5 mm. A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product is approximately 1.5 mm.

Comparative Example 3 Needle punched nonwoven fabric sheet 3 contains 65% by weight of low melting point fibers
and 35% by weight of ordinary polyester fibers, and has a striped area of 35,031 m2 and a thickness of 3.5 mm. A molded article is otherwise produced under the same conditions as in Example 1. The wall thickness of the molded product is approximately 0.
．． It becomes 8mm.

The performance of each example is compared using the table below.

As can be seen from the table, the thickness of the laminated molding material 1 decreases during molding, and the thickness of the molded product is finished as described. The reduction in thickness occurs when the nonwoven fabric sheet 3 is compressed, and the higher the stripe weight of the needle-punched nonwoven fabric sheet 3, the thicker the molded product will be, and the smaller the cotton weight and dirt will be, the thinner the molded product will be. Furthermore, the flexibility of the molded product changes depending on the ratio of low melting point fibers in the needle punched nonwoven fabric sheet 3. If the ratio of low melting point fibers is high, the molded product will become hard and will not have a soft feel.
If there is too little, it will become soft and deformed by the application of even a slight external force.

In each of the above tables, 1@thermopolymer 4 is used as the facing material sheet 2.
47. Although vinyl chloride film was used, polyurethane sheets, natural leather, various woven fabrics, non-woven fabrics, etc. may also be used.

〔Effect of the invention〕

As explained above, if the laminated molding material to which the present invention is applied is used, steps such as cutting, sewing, partial molding, and bonding are unnecessary when manufacturing bags and the like. It can be molded in one piece and has a beautiful finish without requiring any skill.

Bags and the like using the laminated molding material of the present invention are easy to manufacture, so they can be mass-produced at low cost.

It also has the advantage of being lightweight, retaining a soft texture on both the outer layer and the inner layer, and having a moderate ability to maintain its shape, providing sufficient protection for items stored within it.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a laminated molding material to which the present invention is applied;
The figure is a cross-sectional view of the v1 layer molding material during molding, and FIG. 3 is a cross-sectional view of the molded product of the laminated molding material. l Laminated molding material 2, facing material sheet 3
Needle punch nonwoven fabric sheets 5 and 6, mold Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A facing material sheet and a needle punched nonwoven fabric sheet are laminated, and the needle punched nonwoven fabric sheet has a cotton basis weight of 200 to 600 g/m^2, and some of the constituent fibers have a lower melting point than the surrounding fibers. 10 to 6 thermoplastic fibers
A laminated molding material characterized by containing 0% by weight.