JPS61293848A - Orthogonal laminated film reinforced paper - 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 1 The present invention relates to cross-laminated single layer film reinforced paper.

[Conventional technology 1] Conventionally, four-layered waste film-reinforced paper has a well-balanced vertical and horizontal tensile strength and excellent tear strength.
Heavy packaging bags for 1R raw materials, upper end products; Shuttle packages for food desiccants, oxygen absorbers, freshness preservation M, etc.; Clubs such as 77 Mutape. ) Base material for tapes; Used for wrapping machines, communication devices, etc.; Used for skiing, golf, delivery bags shipped directly from the production area, etc.

Cross-laminated film-reinforced papers used in such applications have conventionally been produced by direct lamination.

The direct lamination method is a method for producing a reinforced orthogonal laminated film 1 by ff1h, thermal fusion bonding or thermocompression bonding of a multilayer laminated film to a base paper. The base paper for the orthogonally laminated film reinforced 1 obtained by this method is 1± kraft paper, synthetic fiber paper, etc., and when the orthogonally laminated film is thermocompressed with the base paper, it will not soak into the sail sufficiently. Low strength and easy to peel off.

If Mobara is heat-sealed to the laminated film, it will be difficult to peel off, but the film will be less flexible, so f:
, the reinforcing effect is lacking.

So I called Genki Peeling! Question 5: Is orthogonally laminated film reinforced paper made by heating lamination or extrusion lamination to determine σ? It is L.

The heating lamination method involves placing a (perforated) polymer film on the surface of a base paper, and then placing an orthogonal laminated film on top of it and heat-sealing or thermo-compressing it to produce a reinforced orthogonal @layer film. It's a method. The cross-laminated N7 If the film is not coated, moisture permeability and ':A' properties are lost.

If a perforated film is used, moisture permeability and air permeability remain, but they tend to be non-uniform, and the cost is high because a polymer film is used.

In addition, the extrusion laminated film method is a method in which the paper and orthogonal laminated film are brought into contact with the paper at the center of the extruded laminate.
This is a method for manufacturing orthogonally laminated film reinforced paper by a. The orthogonally laminated film-reinforced paper produced by this method has a high adhesive strength between the base paper and the orthogonally laminated film, but since a film is formed, it has almost no air permeability or moisture permeability.

In addition to the above, we can produce multi-layered film-reinforced paper using the direct papermaking method, in which the orthogonal laminated film is inserted between two layers during papermaking. However, the cross-laminated film reinforced paper is layer r! 1 lN (easy to cause separation).

[Point to be solved by the invention 1 The present invention has been made in order to solve the above-mentioned problems. [4! On the surface of the orthogonal layer film! Heat 1% g paper! Can it be bonded or heat-pressed, and is it equivalent to the base paper? We provide low-cost straight type N film reinforced paper that has I-temperature and moisture permeability, firmly adheres to G and grade without reducing the strength of laminated films, and can use conventional manufacturing processes. With the goal.

[Means for Solving Problem 1 The present invention has the proviso that thermoplasticity 11! Original paper and direct text including /
11 film, and the low melting point thermoplastic fibers contained in the base paper are applied to at least one surface of the orthogonally laminated film. F! I do.

(Example 1) The laminated film-reinforced paper of the present invention consists of a base paper (2) containing thermoplastic fibers (1) as shown in FIG.
It is formed by heat-sealing or hot-pressing the film to the cross-laminated film (3).

In this case, FS2? The thermoplasticity of the melting point [II
Low melting point thermoplastic 11 of base paper (2) obtained by combining a layer containing L(1> and a layer not containing it)
! The layer containing the fiber (1) may be heat-sealed or thermo-compressed to the multilayered film (3), or the original grade ( 2) may be heat-sealed or thermocompression bonded to one or both sides of the multilayer film (3).

In the present invention, the base paper is obtained by incorporating a low-melting thermoplastic fiber #It into various fibers serving as a raw material for paper by a conventionally known method.

The fibers used as the IfK material for the paper include broad leaf U (pulp,
Needle υ (natural pulp such as pulp; Manila hemp, cotup,
Bast fibers such as Mitsumata; cotton linters, bistooth rayon, polyvinyl alcohol a fibers: vinylon fibers, acrylic fibers, polyester a-ben, polyamide fibers,
One or more types of glass fiber, carbon fiber, etc. can be used.

The low tactile thermoplastic fibers include Vol) 1 tyrene &! One or more types or two or more types of polyvinyl chloride, polypropylene Uffi, polyvinylidene chloride fiber, polyvinylidene chloride 1 (polyamide fiber, ethylene-vinyl acetate copolymer polymer fiber, and their funnoede) a4IL may be used, but these Among them, polyethylene fiber,
For polyolefin-based fibers such as polypropylene fibers, ethylene-vinyl acetate copolymer fibers, and these funtuudate fibers! Preferably, ILm is used.

The rtX paper of the present invention may have low melting point thermoplastic fibers present throughout the base paper as shown in FIG.
As shown in the figure, low-melting thermoplastic fibers may be included by kneading only on the surface to be heat-fused or thermo-compressed with the orthogonal laminated film.In this case, low-melting thermoplastic fibers may be included. In the layer, low melting point thermoplastic fibers are used as paper raw material aJ 1100 parts (2111 parts, l under l111) l:i
It is preferable to contain 5 parts or more of the thermoplastic fiber.If 5 parts of the thermoplastic fiber is not added to 100 parts of the paper raw material, adhesion will be poor, which is not preferable.

As the orthogonal laminated film, in addition to the conventionally used polypropylene, 1AiP polyethylene, and 5-density polyethylene, polyvinyl chloride, polyvinylidene, polyamide, etc. are used, and conventionally known manufacturing methods, such as Japanese Patent No. No. 693254, No. 835956, No. 927660, No. 956336, etc.
Among the raw materials for paper, it is preferable to use polyethylene and polypropylene, and the orthogonal 8! In order to maintain the air permeability and moisture permeability of the eyebrow film reinforced paper, it is preferable that the orthogonal laminated film has a net F shape. The width and the spacing between the upper V film pitches are appropriately selected depending on the application.

When base paper is fused to an orthogonal single-layer film, it is preferable that the orthogonal laminated film does not melt, but the low-melting, σ thermoplastic fibers of the base paper melt; !The method of softening the eyebrow film to a pressure of 91 is preferable.

The orthogonal single-layer film is composed of a stretched film on the machine axis and a stretched film on the vertical axis, but the stretched film on the machine axis and the stretched film on the vertical pongee may be made from different films. Alternatively, they may be composed of the same film, but the melting point of at least one of the stretched films is higher than that of the thermoplastic resin contained in the base paper! ! ! It is preferable that the melting point of the stretched film is the same as or higher than that of the thermoplastic fibers.It is preferable that the melting points of both the horizontal and vertical stretched films are lower than the melting point of the thermoplastic mi contained in the base paper, and the stretched film is melted. However, the strength of the orthogonally laminated film itself deteriorates, which is not preferable.

Also, orthogonal P! /l! In order to increase the bonding strength with the base paper, the film is, for example, an orthogonally laminated film made of polyethylene or polypropylene and a low melting point thermoplastic #1! 1LJlli is preferably laminated to a base paper made of ethylene-vinyl acetate copolymer, polyethylene, polypropylene, their foundrydate fibers, etc. ν1° Orthogonal 8! of the present invention! Eyebrow film reinforced paper is manufactured by bonding the low melting point thermoplastic a@ contained in the base paper to the orthogonal PAWi film by thermal bonding or thermocompression bonding. Two methods can be used.

(1) A method in which the base paper is laminated with orthogonally laminated film, heat-sealed, or heat-pressed.

(2) A method in which when heating and drying a filter paper web obtained by a conventional method, low melting point thermoplastic fibers are fused or compressed to bond a straight or laminated N film.

(3) A method in which the orthogonally laminated film is bonded to the base paper at the same time as M-forming by heat-pressing.

The above method (1) is the same manufacturing method as the conventional method, but by this method, a cross-laminated film-reinforced paper having sufficient tensile strength, drawing strength, air permeability, and moisture permeability can be produced.

In addition, in the method (2) above, the cross-laminated film-reinforced paper is removed at the same time as the i-paper is dried! ! Therefore, in the conventional process, it is only necessary to increase the heating temperature when drying the base paper.
Heat M! using a dryer etc. from the top surface using laminated paper containing M! ! When it comes to bonding, it is done in one step rather than in a separate process, so it does not take much time and has a light tensile strength of 1", a tensile strength of 121, breathability,
1] It has moisture permeability. In addition, in the method (3), the cross-laminated film reinforced paper of the present invention can be produced by heating the cross-laminated film at 1°C, without requiring a complicated process because it is laminated to a single base paper. can be manufactured.

Next, the orthogonally laminated film reinforced paper of the present invention will be explained in detail using Examples, but the present invention is not limited to these Examples.

Example 1 202 was formed on a short screen using 100 parts of 450 cc needle pull valve as raw material.
, / 12 paper heads and 7 Riichikisu 450cc needles! ! 50 parts of pull valve and polyethylene synthetic valve (St<P, UL
-400 (Mitsui Petrochemical Co., Ltd.!) was used as a raw material, and a 15y/z' paper web formed on a circular mesh was combined to obtain a base paper.

Next, a polyethylene orthogonal ffflll film (B stone warif, SS grade (manufactured by Shiroishi Plastics Co., Ltd.)) was heated to 1°C on the above-described base paper to obtain an orthogonal laminated film-reinforced paper.

Orthogonal 8 obtained! The tensile strength, tear strength, air permeability, and peel strength of the base paper and orthogonally laminated film of the layered film reinforced paper were measured. The results are shown in Table 1.

In addition, each test was conducted in a similar manner.

(Tensile strength) Measured according to JIS P 8113, [Tensile strength 8 test method for paper-making paper].

(Tear strength) JIS P 8) 16-sheet paper top table tear strength test method': Bubble was determined using two sheets.

(Seismic intensity JIS P 8117r Paper and paperboard air permeability test method).

(Peel strength between paper and monolayer film) Measured according to JIS P 8139r (2) Method B of ``Test method for peel strength of laminated paperboard layer''.

Example 2 Tomosa], 50 copies of rayon of 5wx rayon with 5 tonneel 7
20 parts of 350cc valves, 2 denier in diameter, made of synthetic valves (NBF(E) (Yamato Kushi) made of polypropylene from Szz and nitylene-vinyl acetate copolymer.
Co., Ltd.) and 10 parts of polyvinyl alcohol binder made by Mr. 311 with a thickness of 1 denier were used as raw materials to make paper on a short screen, and dried with a dryer to obtain a base paper of 50 g/z''.

Next, the width of the stretched film is about 1.5ii, and the 1tll interval of 1tll of stretched film is 3.5tz; A cross-laminated film-reinforced paper was obtained by injecting the obtained base paper with P-layer.

The tensile strength, tear strength, and air permeability of the original cross-laminated film reinforced paper and the peel strength between the base paper and the cross-laminated film were measured in the same manner as in Example 1. The results are shown in the first column.

Example 3 Big 31, 5 in 07' Neil! Summer long vinyl 80n, 1 thick 1.0 denier, 1.0 denier thick, szz on a 18 g/m" paper web formed on a short screen using 20 parts of polyvinyl alcohol binder of 1.0 denier c3tw5 as raw material. Mr. Vinicon 50!1, thickness 2.0 denier, 5mz polyethylene synthetic valve <5IIIP, E-400<
A base paper was obtained by combining 18 g#' paper webs formed on a circular screen using 30 parts of polyvinyl alfur paint (manufactured by Mitsui Petrochemical Co., Ltd.) and 20 parts of polyvinyl alfur paint with a thickness of 1.0 denier and a length of 511 as raw materials. .

Next, polyethylene orthogonal! I! M Film (Shiraishi Wazo 7)
, S grade (IL1 Stone Plastic Co., Ltd. GL) and Naozan's yy, which was bonded to paper by heat and pressure, produced an important laminated film reinforced paper.

The tensile strength of the film reinforced paper was obtained!
Strength, air permeability and peeling of orthogonal laminated film
The strength was measured in the same manner as in Example 1. The result is the first
I will show you the teachings.

Implementation f (50 parts of 5xzfk polyester with a thickness of 1.3 denier, Swzi's polyester Paingoo 40i with a thickness of 2.0 denier, and 50 parts of polypropylene 11 with a thickness of 2 denier and 5zyl were used as raw materials to make paper on a scratch surface. , and dried with a dryer to obtain 60 g/x' base paper.

Next, a polypropylene laminated film (So7 Net (New Japan So7 (Match)) was thermocompression bonded to the pre-fertilized base paper (1) to obtain orthogonal M-layer film reinforced paper.

The tensile Q strength, tear strength, air permeability, and peel strength between the base paper and the cross-laminated film were measured in the same manner as in Example 1. The results are shown in Table 1.

Example 5 Lath fiber Jli 70 edition, thickness 1.61 sq. with a thickness of 9 μl.
Jzi's polyvinyl alcohol Pine Goo 101 with 0 denier! ! Then, 20 parts of vinyl chloride fiber with a thickness of 20 denier and 6zzl was used as a raw material to make paper on a short screen and dried with a dryer to obtain a base paper of Bog/z". Next, a base paper pre-fertilized with a vinyl chloride laminated film was made. A cross-laminated film-reinforced paper was obtained by thermocompression bonding.

The tensile strength, tear strength, and air permeability of the cross-laminated film-reinforced paper were measured in the same manner as in Example].

The results are shown in Table 1.

Example 6 40 parts of Mr. Szz's polyamide with a thickness of 1.5 denier, and 60 parts of low melting alpha polyamide with a thickness of 2.0 denier and 5zz length.
The raw material was made into paper on a short screen and dried with a dryer to obtain a base paper of 100 g/z'.

Next, a cross-laminated film-reinforced paper was obtained by hot-pressing a polyamide cross-laminated/11 film onto the base paper obtained above.

The tensile strength, tear strength, air permeability of the obtained cross-laminated film reinforced paper, and peel strength between the base paper and the cross-laminated film were measured in the same manner as in Example 1.

The result! '! 1! ! : Shown in

Example 7 45 parts of a softwood valve with 500cc of 7-leanness, 50 parts of a polyethylene synthetic valve (Sl<P, E-ε00 (Mitsui 7S Yukagaku Co., Ltd. GL)) with a diameter of 1.0 denier and 3
Using zx 艮's polyvinyl alcohol fiber @ 5 P+ as a raw material, 90 parts of 7 lees 500 cc softwood bulbs and 3xw! Alcohol class Jii
i5g/z2 formed on Kusho using o part as raw material
The surface temperature of the base paper is 130℃, and when it enters the dryer (diameter 21% circumference 40i/win), polyethylene cross-laminated film (Shiraishi Wari 7% SS grade (manufactured by Yagoku Plastic Co., Ltd.)) is used. is heated together with the paper web to dry the base paper and soften the polyethylene synthetic valve and polyethylene cross-laminated film contained in the base paper, and then pressed at the outlet of the dryer to bond the base paper and the polyethylene cross-laminated film by thermocompression. Obtained important cultural heritage laminated film reinforced paper.

Original orthogonal 8! Tensile strength, tear strength, air permeability and I! of layered film reinforced paper. The peel strength of the paper and orthogonally laminated film was measured. The results are shown in Table 1.

Example 8 60 parts of rayon short A4T with a thickness of 82 denier and 6 parts, and 3 parts of low density polyethylene short fibers with a thickness of 2 denier and 6zt.
0 parts, thickness 1 denier, 10 parts of 3zx polyvinyl alcohol as a raw material, paper is made by a conventional method, 60g/I"I
f! , got the paper.

This base paper was used in the lamination process of YL and IIW films to strengthen the orthogonal laminated film.

In other words, the warp split is continuously running while being widened in the longitudinal direction, the orthogonal area created under the web, the lilized paper is continuously run at the same speed as the warp split, and the red split web surface is applied from above. The weft sprue 7Y web widened from the right angle direction was supplied, cut into lengths equal to the width of the warp spree 7Y web, and laminated without any breaks. This PJI layer is bonded by heat and pressure, and is made from orthogonally laminated film reinforced paper.

Tensile strength and tear I of the obtained orthogonally laminated film reinforced paper
H, air permeability, and peel strength between the base paper and the orthogonally laminated film were measured. The results are shown on the back.

Comparative Example 1 A polyethylene orthogonal laminated film (Shiraishi Wari 7, SS grade) was thermocompression bonded to a 35 g/a' base paper produced by a conventional method using a bulb. Orthogonal 8!M film reinforced paper was obtained.

Tensile strength, tear strength, air permeability of the obtained monolayer laminated film reinforcement, peel strength of base paper and orthogonal laminated film, air permeability of original 1 and orthogonal laminated film! (The separation strength was measured. The results are shown in Table 1.

Comparative Example 2 A cross-laminated film-reinforced paper was obtained by extruding and fusing a polyethylene cross-laminated film (Shiraishi Wari 7, SS grade) to the base paper obtained in Comparative Example 1 using the lamination method.

The tensile strength, tear strength, air permeability, and peel strength between the paper and the cross-laminated film were measured. The results are shown in Part 2.

1 or less margin] [Effects of the invention] The iIl[\ laminated film reinforced paper of the present invention does not lose air permeability or moisture permeability, has sufficient adhesive strength, and is bonded to the base paper during film formation or paper drying. Therefore, it has the advantage that it can be manufactured in the same process as the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of the orthogonally laminated film-reinforced paper of the present invention, and FIGS. 2 and 3 are schematic sectional views showing the appearance of the orthogonally laminated film-reinforced paper of the present invention. (Main symbols of the drawings) (1): Thermoplastic fiber (2); Original paper (3): 'i-pattern laminated film 1 diagram procedural amendment (voluntary) August 8, 1985 Second Licensing Agency Director Yu Gong Do Department Name of the invention Relationship to the case of the person who corrected the orthogonal laminated film reinforced paper Patent Law Address 3-68-1, Kyobashi, Higashi-ku, Osaka! (1) Contents of amendment in Column 6 of Detailed Description of the Invention (j) of the specification (1) Specification IF page 3, page 18 - 9 and Te [Polymer film 1 is referred to as "perforated polymer film"] and correct it. (2) Correct the sentence “papermaking” in line 9 of page 12 to “paperboard.” (3) Same as above] On page 3, line 12, "heat-adhered" is corrected to "heat-fused". that's all

Claims (1)

[Claims] 1. Consisting of a base paper containing thermoplastic fibers with a low melting point and a cross-laminated film, the thermoplastic fibers of the base paper are bonded to at least one surface of the cross-laminated film by heat fusion or thermocompression bonding. Cross laminated film reinforced paper. 2. The orthogonally laminated film reinforced paper according to claim 1, wherein the orthogonally laminated film is in the form of a net.