JPS59156745A - Laminate for sail - 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 relates to the improvement of a base for sails, and more specifically, the present invention relates to the improvement of a base for sails, and more specifically, an adhesive layer is provided on at least one side of a polyester biaxial stretched offshore film in which inorganic fine particles are dispersed. This invention relates to a laminate for sails in which fabrics are laminated with fabrics interposed therebetween.

[Prior art]

Conventionally, sail cloth for sailboats, windsurfing, etc. is made of cloth that is impregnated or coated with resin. In recent years, some sail cloths (hereinafter referred to as sail laminates), which are made by laminating plastic films and fabrics, have begun to be used. Compared to conventional resin-impregnated types, the strength in the diagonal direction (hereinafter referred to as the bias direction) has been improved, making it possible to reduce the weight of the sail. but.

By reducing weight, it is thinner than conventional cloth impregnated type.
Since a fabric with a small basis weight is used, it has the following drawbacks in yachting and windsurfing, especially in windsurfing applications where fashionability is important.

(1) Since a thin fabric with a small basis weight is used, the color tone is poor and a cheap window is provided.

(2) Due to lack of durability, the fabric and film tend to peel off during repeated use.

(3) In the case of a double-sided fabric type sail laminate in which fabric is laminated on both sides, interference and misalignment occur.

[Purpose of the invention]

The present invention aims to eliminate the drawbacks of the conventional sail laminates and provide a sail laminate that has a clear color tone, is excellent in durability, and is free from interference fringes and blurring.

[Structure of the invention]

The present invention has the following configuration to achieve the above object.

That is, 1 to 5 inorganic fine particles with an average particle diameter of 10 mμ to 5μ
20 weight coefficient Gold-containing polyester biaxially stretched film with a thickness of 15 to 125 μm, with a thickness of 5 to 50 μm on at least one side
A fabric weight of 20 to 20 og consisting of short or long fibers with a single filament fineness of 05 to 20 denier through an adhesive layer of
A laminated body for a sail is characterized by laminating fabrics of /, m'.

The polyester biaxially stretched film referred to in the present invention is a biaxially stretched film made of 9 well-known polyesters, specifically polyesters such as polyethylene terephthalate (hereinafter abbreviated as PET), polyethylene naphthalate, polyethylene terephthalate, and copolymers thereof. Nobuoki film (hereinafter biaxial Nobuoki film is abbreviated as B○' film),
Preferably, the film is a BO film made of PET and a copolymer containing 90 mol% or more of the PET component.

It contains inorganic fine particles and has a thickness of 15 to 125 microns, preferably 20 to 100 microns. The B○ film of the present invention has a strength of 15 kg/m in all directions.
m' or more, preferably 18 kHz/mm' or more.

In the present invention, the inorganic fine particles are defined in the periodic table [a.

IIb, l1lb, lVa, IVb, vb,
V] Oxide or sulfide consisting of at least one element selected from a+ to li a.

Well-known fine particles consisting of sulfate and carbon black, specifically titanium oxide and barium sulfate.

Calcium carbonate, clay, silicon dioxide, cruzi.

Magnesium carbonate, aluminum hydroxide, zinc sulfide.

Examples include antimony oxide, iron oxide, ultramarine, and cobalt blue. Among these, titanium oxide is preferable for white sails and double-sided fabric type sails. Further, the inorganic fine particles have an average particle diameter of 10 mμ to 5μ, preferably 50 ++
+μ~2μ, the amount contained in the film is 1~20
Weight factor, preferably 4 to 10 weight factor. If the average particle diameter is 10 mμ and unhooked and less than 1 mouth weight ratio, durability, one color tone, interference fringes, and blurring will not be improved. Further, if the thickness exceeds 5 μm and exceeds 20 weight coefficient, the strength of the BO film, that is, the strength of the sail, decreases. These inorganic fine particles can be uniformly dispersed in polyester during or after polymerization by blending, kneading, or extrusion, and there are no particular restrictions on the mixing time or mixing method. The masterbatch method can also be effectively used.

9 It is preferable that the BO film of the present invention is subjected to electrical discharge treatment and primer treatment on the surface to be adhered.
If necessary, additives such as weathering agents may be dispersed and blended into the film.

The adhesive layer of the present invention is made of a well-known adhesive for bonding the BO film and the fabric, and the adhesive can be arbitrarily selected from thermoplastic resins and thermosetting resins. Specifically, they include copolymerized polyester, polyester ether, polyacrylate 9 polymethacrylate, polyurethane, and the like. A particularly preferred example is a thermoplastic resin containing copolymerized polyester as a main component, or a thermosetting adhesive containing a crosslinking component such as isocyanate. The thickness of the adhesive layer is 5 to 50 μ, preferably 10
~40μ. The adhesive layer is laminated to the BO film or fabric by coating, extrusion laminating, and other known methods. A weather resistant agent, a heat resistant agent, etc. may be dispersed in the resin used for the adhesive layer.

The thickness of the adhesive layer is determined by taking a cross-sectional photograph of the sail laminate in the thickness direction, and calculating the thickness from the photograph using the following method. In other words, when A is the shortest distance between the BO film and the fibers that make up the fabric that is bonded to the adhesive layer, and B is the thickness of the adhesive layer at the part where the adhesive layer is impregnated into the fabric, (A + B)
/2 is the thickness of the adhesive layer. The thickness of the adhesive layer measured in this way is approximately equal to the thickness of the adhesive layer when the adhesive layer resin is melt-extruded or applied and dried on the B○ film before laminating the fabric.

The fabric referred to in the present invention refers to a fabric having a single yarn fineness of 05 to 20 denier (hereinafter denier is abbreviated as D), preferably 1 to 10D.
Fabric weight 20-200g consisting of short or long fibers
/m', preferably 6o~150g/m' woven fabric.
It is a knitted or non-woven fabric. The fibers that make up the fabric are synthetic fibers such as polyester and polyamide, or natural fibers. In particular, fabrics made of copolymer fibers containing PET and PKT components of 90 or more mole ratio are preferred. It is also possible to use a single-layered fabric that has been dyed and softened. The fibers constituting the fabric may be fibers containing dispersed additives such as a weathering agent, a coloring agent, a heat resistant agent, and inorganic fine particles. BO film is 15μ,
The thickness of the adhesive layer is 5μ, and the single yarn fineness of the fabric is 0.5D.
, if the basis weight is less than f'L of 20 g/m', the disadvantage is that the tear strength and tensile strength in the bias direction of the sail laminate are weak. B○ If the thickness of the film exceeds 125μ, the thickness of the adhesive layer exceeds 50μ, the single yarn fineness of the fabric exceeds 20D, and the basis weight exceeds 2゜Og/m', the sail laminate will become hard and the texture will be poor. Sewing workability and handling are poor, and there is no improvement in color tone.

Next, an example of a method for manufacturing a laminate for a sail according to the present invention will be described. However, the present invention is not limited to products obtained by these manufacturing methods.

The laminate for the sail is made of PET with fine particles dispersed in it.
- It can be produced by a method in which a BO film and a fabric are laminated by vapor bonding and thermal bonding.

Note that it is preferable to remove oil and the like from the fabric by scouring before laminating the fabric. Next, in a typical manufacturing method, rutile-type titanium oxide with an average particle size of 0.25 μm is dispersed as inorganic fine particles by a master bunch method, and then diluted.

Film-formed, Nobuoki PF! This will be explained by taking T-BO film as an example.

(1) A thermoplastic polyester elastomer, for example (polybutylene terephthalate/isophthalate-polytetramethylene glycol (70 /30.-50) copolymer.The copolymerization molar ratio of terephthalic acid/inophthalic acid is 7.
D/30 indicates that the copolymerized amount of polytetramethalene glycol is 50% by weight of the whole) [Intrinsic viscosity (IV) measured at 25'C in orthochlorophenol
．． 82] (hereinafter abbreviated as Polymer A) is melt-extruded to obtain a composite film of Lamio-)L, [: PET-Bo//Polymer A]. Then, the polymer Ai of this composite film
1 and fabric are superimposed and integrated by heat bonding using a press roll to obtain a laminate for fabric roll [PET-BO//polymer A//fabric].

(2) Using a melt extrusion laminator, polymer A is melt-extruded between the PET-B◯ film of (1) above and the fabric, and the polymer A is crimped and integrated with nip rolls. In order to adjust the adhesion force, pass it further through a press roll as necessary [P
F! 'T-Bo7' Polymer A//Fabric] A laminate for fabric roll is obtained.

(3) Make [:PET-Boz Polymer A] using the method described in (1) above, turn the film over, and apply Polymer Af:
Similarly, melt extrusion Lamy L-)L[:VolimaA//P
A composite film of E T-Boz Polymer A] is made. Next, using a press roll, the fabric is thermally bonded to both sides to be integrated, thereby obtaining a laminate for sale made of double-sided fabric.

(4) Polymer A was similarly melt-extruded onto the other PET-BO film side of the fabric laminate, made by the method (2) above, and thermally bonded to the fabric, followed by further pressing if necessary. A double-sided fabric sail laminate is obtained through the rolls.

(5) On one side of the PET-BO in (1) above, use a gravure coater, reverse coater, or bar coater fxt to coat a linear saturated polyester, such as "Vylon 30" (manufactured by Toyobo), with a small amount of polyin as an adhesive layer resin. Sheaide, for example °'Colloy;-)L" (manufactured by Iyomoto Polyurethane ■) or "Sumidur"-75 (manufactured by Sumitomo Bayer ■) is added, and the viscosity is adjusted with an organic solvent. The viscosity is adjusted with an organic solvent, and the solvent is evaporated. After that, it is heat-pressed and integrated with a fabric using a press roll.After-curing is performed as necessary to adjust the adhesive strength to obtain a sail laminate of [: PET-no7 adhesive layer 1 fabric].

(6) Prepare pET-BC)7'adhesive layer fabric] by the method described in (5) above, and apply the adhesive layer to the PET-B0 side of the adhesive layer in the same manner as in (5) above. The screen fabric is then heat-pressed using a press roll to obtain a sail laminate of the screen fabric. If necessary, perform after-cure to maintain strong adhesive strength.

The thermal bonding conditions in the present invention are the above +1], t3J
, +5).

When manufacturing by method (6), the temperature of polymer A or the adhesive layer when passing through the press roll is 110°C to 180°C.
C9 is preferably 140 to 170°C, and the linear pressure of the press roll is adjusted depending on the degree of impregnation of the polymer into the fabric. Normal line pressure is 1~30 z/C.

In methods (2) and (4), the polymer A discharged from the nozzle was 2 to 10 klg/cm.
temperature is required to be in a softening state when nipped with the film or fabric. The conditions for volatilization of the voting medium in (5) (6) of the present invention are arbitrarily selected depending on the boiling point, evaporation rate, etc. of the solvent used. In the present invention, the +21.+4+ method is particularly preferred in terms of process simplification.

The sail laminate of the present invention has antistatic treatment on the fabric used.
Processing treatments known to fabrics such as water filling treatment and anti-wrinkle treatment can be performed. You can increase the fashionability by printing or pasting a design or letter on a small piece of fabric or film.

〔Effect of the invention〕

The present invention is based on polyester 2 in which specific inorganic fine particles are dispersed.
By laminating an axially stretched film and a fabric through an adhesive layer by a thermal bonding method, the following excellent effects were obtained. Namely.

(1) The color tone of the sail is clearer and deeper, giving it a luxurious feel.

(2)' The sail has excellent durability.

(3) Interference fringes and misalignment can be eliminated in double-sided fabric types.

Misalignment refers to the fact that the thick twisted yarns in the warp and weft directions, which are included in a checkered pattern to improve the tear strength of the fabric, appear misaligned when bonded to both sides of the BO film, resulting in poor appearance.

In the present invention, the effects (1) and (3) in particular increase the fashionability of the laminate for sale and improve its commercial value.

The effects of the present invention were evaluated based on the following criteria.

(1) The clarity of color tone was determined visually from the fabric side using the following criteria.

◎ Exhibits an extremely clear color tone.

○ Kana V) Makes a clear color tone cloudy.

△ Differences are observed compared to conventional products.

× Same level as conventional products.

Furthermore, for white, JIS-p- is measured using a whiteness meter.
Measured according to 8123. For other colors, we use a self-recording spectrophotometer to determine that the larger the sum of the ratio of scattered reflected light and the ratio of scattered transmitted light in a specific wavelength range for each color is, the clearer it is, and compare it with visual judgment. did.

(2) Interference fringes and misalignment were determined by visually observing the sail laminate made of double-sided fabric under sunlight and using the following criteria.

◎　No interference fringes or misalignment observed at all.

○ Interference fringes and blurring are hardly noticeable.

△　Slight rubbing of interference fringes 9 is observed.

× Interference fringes and misalignment are observed.

+31 i (In order to match the usage environment of the actual sale, a Sunshine Weatherometer was used for personnel, and JIS-
According to A-141□5, the single-sided type is treated from the film side, and the interfacial adhesion between the film and fabric is 200 g/
It is indicated by the processing time when it becomes less than cm.

Peeling angle = 90°9 Tensile speed: 200mm/min
.

(4) For texture, bending resistance is measured according to JIS-L-1096-6.20.1 Bending Repulsion A Method (Gurley Method).

The warp of the fabric for both sides of the laminate.

The bending resistance in the weft direction was measured, and the average value was taken as the bending resistance of the laminate. Next, embodiments of the present invention will be described based on Examples.

Example 1 Intrinsic viscosity (IV) '0.62 measured in orthochlorophenol at 25°C containing 40% by weight of rutile titanium oxide with an average particle size of 0.25μ by the master bunch method.
P K and T of are diluted with additive-free PET.

P K 'I' raw needles with varying concentrations of titanium oxide were prepared.

This raw material was melted and extruded in a conventional manner to create a vertical 6 x horizontal 6.
PET-BO films with a thickness of 68 μm (Table 1) were produced by biaxially stretching 3 times, heat setting, and varying the concentration of titanium oxide. Refined white plain taffeta made of PET fiber was prepared as a fabric (characteristic values are shown in Table 1). Polymer A (polybutylene terephthalate/inphthalate-polytetramethylene glycol (70/3O-
copolymer) with a molar ratio of 50). [Intrinsic viscosity measured at 25°C in orthochlorophenol (Eq.v) 182] was used. Using an extrusion laminator with a diameter of 40 mm and a nozzle with a width of 360 plates, Polymer A was melt-extruded at 240'a and pressed with a titanium oxide-dispersed PET-BO film using nip rolls [Titanium oxide-dispersed PB T-E O // Polymer A] composite film (thickness of IJ polymer A: 20
μ) was created. Next, the polymer A side of this composite film and the fabric were superimposed and laminated by thermocompression bonding at 160°C and a linear pressure of 10 kg/cm using a press roll to obtain a sail laminate of [titanium oxide dispersed PET-BO7 polymer A7 fabric]. The results of the evaluation are shown in Nα1 to Nl5 in Table 1.

Nα1 to Nα5 of the present invention were found to be effective in improving the color tone, and the durability was also improved.

Ratio 1 Bite Example 1 A single-sided fabric type sail laminate was produced in the same manner as in the example except that the titanium oxide concentration was changed, and the evaluation results are shown in Table 1 for Na 6 to Na 8. The concentration of titanium oxide is 1
If Nα6 or 7 was less than the weight ratio, the improvement in color tone was insufficient and the durability was poor.

In addition, Nα containing titanium oxide exceeding 20% by weight61)
In No. 8, a tear occurred during the 2-axis stretching process of 6x vertically x 63x horizontally. 1pET-BO produced by low-magnification stretching to obtain a tear-free film had insufficient strength as a sail. Comparative Example 2 1.0 weight of titanium oxide with an average particle size of 0006μ was blended. Combined 7' (1 P
An ET-BO film was made in the same manner as in Example 1. Next, a sail laminate was made in the same manner as in Example 1 and evaluated. The results are shown in Nα9 and 10 in Table 1. Average particle size is 7
Nα10, which contains μ titanium oxide at 16% by weight, is vertically 6
A tear occurred during the 6 x 6 x 2 axis rolling offshore process. The PFT-BO film subjected to low magnification biaxial stretching without tearing lacked strength as a sail and could not withstand use. Titanium oxide (i71.0
The sail laminate NIL 9 using weight-blended PET-B'0]-ilm did not have a clear color tone and was poor in durability.

Comparative Example 6 Example 1 Using PET-B○ film of NoNα4,
A single-sided fabric type sail laminate was made and evaluated in the same manner as in Example 1, except that the fabric had a high basis weight (as shown in Nα1゛1 in Table 1), which is outside the scope of the present invention. The results are shown in Nα11 in Table 1. This laminate did not show any improvement in color tone due to lamination and was at the same level as the fabric alone.

Example 2 [Titanium oxide dispersed PET-B 0
7'Polymer A] was prepared. This laminate was inverted, and a composite film of a bath-melt extrusion laminate white layer with Polymer A at 240'0 on the PET-BO side was produced. Next, the same fabric as in Example 1 was applied to both sides of this composite film using a press roll at 160°0. A sail laminate having a structure of [Fabric 7 Polymer A//Titanium oxide dispersed pgT-BO,/' Polymer A7 fabric] was made by thermocompression bonding at an IJ pressure of 10 cm/cm, and the evaluation results were shown in Table 1 at Nα12~ It is shown in Nα16. N of the present invention
α12 to α16 were free of interference fringes and had excellent commercial value.

Example 6 The Nα2 PK, TBO film of Example 1 was used.

The fabric used was white taffeta made of PET fiber shown in Nα17 in Table 2 and having thick twisted yarns in a check pattern in the warp and weft directions.

As an adhesive layer, Polymer B [80 parts of copolyester and ethylene/acrylic acid copolymer (contains acrylic acid)
t%) in a blend of 20 parts by weight.

Copolyester: telental acid/inphthalic acid (56/
44)・Ethylene glycol/butanediol (32
/68) (molar ratio)] was used,
A composite film of [titanium oxide dispersed PET-BO/polymer B (thickness of polymer B: 20 μm)] was produced by melt extrusion in the same manner as in Example 1. Thereafter, a composite film of the filter layer was prepared in the same manner as in Example 2, and the fabric was thermocompression bonded to produce a laminated body for a sail made of double-sided fabric.Table 2 shows the evaluation results.

In this laminate, the misalignment between the front and back sides of the checkered pattern was eliminated, and the product had a high commercial value with an inferior appearance.

Comparative Example 4 Example 2 except that a PET-BO film with a reduced titanium oxide concentration was used. A double-sided fabric type sail laminate was made in the same manner as in the example, and the evaluation results are shown in Table 2.
It is shown in α18 to Nα21. Nα18. using the same fabric as in Example 2. Nα19 had significant interference fringes and was of low commercial value. In Na 20°Nα21, which used the same fabric as the small-sized Example, the checkered pattern was clearly visible and had a very poor appearance.

Example 4 The same PET-B○ film as in Example 1 was used, and the adhesive layer was a linear saturated polyester resin, Vylon Roo
” (manufactured by Toyobo) and polyisocyanate, ”5u
ITlidur” N-75 (Sumitomo pie, ln le■
A mixture of 10:1 (solid weight ratio) and diluted to 20% by weight with a mixed solvent of methyl ethyl ketone/toluene (2/8) was used. This adhesive layer solution was applied to a PET-BO film using a gravure coater so that the average thickness after drying was 12μ, and after drying at 10°C for 2 minutes, the fabric (the fabric of Example 1 was coated with red disperse dye A laminate of [titanium oxide-dispersed PET-B'o, adhesive layer red fabric] was layered with the adhesive layer and thermocompressed using a roll laminate at 160'O and a linear pressure of 10 kg/cm. made. This laminate was reversed and an adhesive layer was similarly provided on the PET-BO side.

A double-sided fabric type sail laminate of [Red fabric 1 Adhesive layer 1 Titanium oxide dispersed PET-B○ 7 Adhesive layer 7 Red fabric] was made by laminating it with fabric, and the evaluation results are shown in Table 2 with Nα22 ~
It is shown in Nα26. Nα22 to Nα26 of the present invention had a clear red color, no interference fringes, excellent durability, and high commercial value.

Comparative Example 5 P K T -B' O with reduced titanium oxide content
A double-sided red fabric type sail laminate was prepared in the same manner as in Example 4, except that the film was used. NIL 27, with a small amount of Nα
For 2B, no clear red color was obtained, and the appearance of interference fringes was observed, making the 75 balls feel cheap as a product.

Manual continuation supplementary book 59.5.26.

Mr. Kazuo Wakasugi, Commissioner of the Japan Patent Office (Monday/Monday, 1980)1, Indication of the case, Patent Application No. 29524 of 19882, Laminated body for the title of the invention3, Person making the amendment, etc. Patent applicant's address: Tokyo 5, 2-2 Muromachi, Nihonbashi, Chuo-ku, Tokyo, No number of inventions increased by the amendment 6, 1 feature π'F claims of the specification subject to the amendment', ``Detailed description of the invention'' (1) Specification The claims on page 1 are amended as shown in the attached sheet.

<2) ``Thickness of 1 part of adhesive layer on page 6, lines 12-13'' is corrected as ``maximum thickness of adhesive layer including 1 part''.

(3) Same, page 8, line 3 Correct "lid adhesion" to "evaporated layer".

(Attachment) Claims (1) 1 to 2 inorganic fine particles with an average particle diameter of 10 mμ to 5μ
Consisting of short fibers or long 4M fibers with a single fiber fineness of 0.5 to 20 deniers, interposed on at least one side of a polyester biaxially stretched film containing 0% by weight and having a thickness of 15 to 125 μm, with an adhesive layer having a thickness of 5 to 50 μm. eyes (=l amount 20-200
(A laminated body for sails made of laminated fabrics of 1/vn2.

Claims (1)

[Claims] Adhesion 1 with a thickness of 5 to 50μ on at least one side of a polyester biaxial stretched film with a thickness of 15 to 125μ and containing 1 to 20 by weight of inorganic fine particles with an average particle diameter of 10μ to 5μ
Short fibers with a single yarn fineness of 05 to 20 denier-1: or long fibers with a basis weight of 2゛°O to 500 g
/ m' fabric is laminated for sails.