JPH09268415A - Helmet made of glass fiber reinforced thermosetting resin and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject helmet suitable for industrial helmets having rivet without deforming when put on in a high temperature working place and no fear of being damaged by fixing a putting body inside of a putting body-fixing part having a double wall structure made of a glass fiber reinforced thermosetting resin. SOLUTION: In this helmet made of a glass fiber reinforced thermosetting resin, a fitting body 2 which is fitted inside of a helmet body 1 is fixed to an inside wall 3 of a fitting body-mounting part which is made in a double wall structure having an outside wall 3 and an inside wall 4 with a glass fiber reinforced thermosetting resin. The head of the rivet does not protrude outside of the helmet body 1 and the head part is protected from becoming to a high temperature owing to the double wall structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass fiber reinforced thermosetting resin helmet that can be suitably used as an industrial helmet and a method for manufacturing the same.

[0002]

2. Description of the Related Art An industrial glass fiber reinforced thermosetting resin helmet has a wearing body attached to the inside of the cap by means of rivets. However, since the head of the rivet protrudes to the outside of the hat, the temperature is high. When the industrial helmet is worn at the work site, the rivets are deformed and the industrial helmet is damaged.

[0003]

DISCLOSURE OF THE INVENTION The present inventors have conducted research on a glass fiber reinforced thermosetting resin helmet in which a rivet does not deform even when worn at a high temperature work site and is unlikely to be damaged. As a result, the present invention has been reached.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to a glass fiber reinforced thermosetting resin helmet in which a wearing body is attached to the inside of a cap body, and an outer wall portion formed of the glass fiber reinforced thermosetting resin. A glass fiber reinforced thermosetting resin, in which a mounting body is attached to an inner wall portion of a mounting body mounting portion having a double wall structure of an inner wall portion formed of glass fiber reinforced thermosetting resin Regarding helmets made.

Further, the present invention relates to a method of manufacturing a glass fiber reinforced thermosetting resin helmet in which a wearing body is attached to the inside of a cap body, and an outer wall formed of the glass fiber reinforced thermosetting resin. A cap body having a wearing body mounting portion having a double wall structure with an inner side wall formed of glass fiber reinforced thermosetting resin is manufactured, and the wearing body is attached to the inner side wall of the wearing body mounting portion. The present invention relates to a method for manufacturing a glass fiber reinforced thermosetting resin helmet in which a wearing body is attached inside a cap body.

Further, the present invention relates to a method of manufacturing a glass fiber reinforced thermosetting resin helmet in which a wearing body is attached inside the cap body, and a cap body male mold member having a cap inner surface forming surface. A cap body male mold having a plurality of mounting body mounting portion forming mold members arranged around the cap body inner surface forming surface with a gap therebetween, and a cap body female mold. Use
By sandwiching a glass fiber thin piece body in the gap between the cap inner surface forming surface and the mounting body mounting portion forming die member, by matched die molding,
A cap body having a wearing body mounting portion having a double wall structure of an outer wall formed of glass fiber reinforced thermosetting resin and an inner side wall formed of glass fiber reinforced thermosetting resin is manufactured, and then worn. The present invention relates to a method for manufacturing a helmet made of glass fiber reinforced thermosetting resin, in which a wearing body is attached to the inside of a cap body, wherein a wearing body is attached to an inner wall of a body attaching portion.

Further, the present invention relates to a method for manufacturing a glass fiber reinforced thermosetting resin helmet having a wearing body attached to the inside of a cap body, wherein a cap body male mold member having a cap inner surface forming surface is provided. A cap body male mold having a plurality of mounting body mounting portion forming mold members arranged around the cap body inner surface forming surface with a gap therebetween, and a cap body female mold. Use
A glass fiber thin piece body is sandwiched in the gap between the hat inner surface forming surface and the mounting body mounting portion forming mold member, and the preform is set in the cap body female mold, and the molding material is poured into the preform, Then, the mold was clamped, pressurized and heated to form a double wall structure of an outer wall formed of glass fiber reinforced thermosetting resin and an inner side wall formed of glass fiber reinforced thermosetting resin. A glass fiber reinforced thermosetting resin helmet having a wearing body attached to the inside of the hat body, characterized in that a hat body having a wearing body attaching portion is manufactured, and then the wearing body is attached to an inner wall of the wearing body attaching portion. Manufacturing method.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an example of a glass fiber reinforced thermosetting resin helmet according to the present invention, and FIG. 2 is a cap body male mold member of a cap body male mold and a plurality of mounting body mounting portion forming mold members. A perspective view showing a state in which a glass fiber thin piece body is sandwiched in the space between and, and is seen from below. Fig. 3 shows a state in which the preform is set in the female mold of the cap body and the molding material is poured into the preform. FIG. 4 is a sectional view showing a state in which the male cap mold and the female cap mold are clamped, and FIG. 5 is a cap with the male cap mold and the female cap mold opened. FIG. 6 is a cross-sectional view showing a state in which a body is taken out, and FIG. 6 is a cross-sectional view showing a state in which a through hole is formed in an inner wall of a mounting body attachment portion having a double-wall structure of an outer wall and an inner wall 7 is a partially cutaway perspective view showing a state in which the mounting body is attached to the mounting body mounting portion of the cap body, and FIG. 8 shows the mounting body mounted on the mounting body mounting portion of the cap body. It is a partially broken perspective view showing a girder state.

The glass fiber reinforced thermosetting resin helmet according to the present invention has a glass fiber reinforced thermosetting resin cap body 1 and a mounting body 2 mounted inside the cap body 1. . The cap body 1 has an outer wall 3 and an inner wall 4 around the lower end.
The mounting body mounting portion 5 having a double wall structure of 3 to 8 is provided, and the mounting body 2 is mounted on the inner side wall 4 of the mounting body mounting portion 5.

To manufacture the cap 1, chopped strands and a molding material composed of a thermosetting resin for molding, a curing agent, a filler, a release agent, a coloring agent and the like are used as materials. Examples of chopped strands include RER231, RER220, and RER26 manufactured by Nippon Glass Fiber Co., Ltd.
Examples include rovings such as No. 5 cut into a predetermined length. The chopped strands are preferably contained in the cap 1 in an amount of 30 to 50% by weight.

Examples of the thermosetting resin for molding include unsaturated polyester resin and unsaturated vinyl ester resin. Examples of commercially available unsaturated polyester resins include PM-14 manufactured by Dainippon Ink and Chemicals, Inc.
1, PM-142, FG-104, FG-208 and the like. Examples of commercially available products of unsaturated vinyl ester resin include UE-3 manufactured by Dainippon Ink and Chemicals, Inc.
505, UE-5210 and the like. It is preferable to use 80 to 99% of the thermosetting resin for molding in the molding material.

Examples of the curing agent include benzoyl peroxide and the like. The curing agent is preferably used in the molding material in an amount of 1 to 5% by weight. Examples of the filler include calcium carbonate and the like. It is preferable to use 5 to 20% by weight of the filler in the molding material.

Examples of the release agent include zinc stearate and Zelec UE manufactured by DuPont, USA. The release agent is preferably used in the molding material in an amount of 0.5 to 5% by weight.

As the colorant, for example, colored resin pellets obtained by kneading various pigments into polyester resin can be used. Commercial products of such colorants include:
For example, Polyton White J manufactured by Dainippon Ink and Chemicals, Inc.
-180, Polyton Black J-330, Polyton
Red J-410, Polyton Orange J-550, Polyton Yellow J-620, Polyton Brown J-
765, Polyton Blue J-829, Polyton Green J-851, Polyton Violet J-960 and the like. The colorant is preferably used in the molding material in an amount of 0.5 to 3.5% by weight.

When the cap body 1 is manufactured, for example, the cap body male die member 7 having the cap body inner surface forming surface 6 and the cap body male die member 7 with a gap from the cap body inner surface forming surface 6. It is preferable to use a hat body male die 9 having a plurality of mounting body attachment portion forming die members 8 arranged in the periphery and a hat body female die 10 to perform matching die molding. It is preferable to dispose about 3 to 8 mold member forming attachment body forming mold members 8 around the cap body male mold member 7.

In order to manufacture the cap body 1, first, the chopped strands cut to a predetermined length are supplied to a mesh preform which is being sucked, and the chopped strands cut to a predetermined length. A preform consisting of chopped strands, which are almost in the shape of a hat and are cut into a predetermined length, by sucking the product onto a mesh preform and spraying a binder with a spray gun, then heating and drying. 11 is formed. The chopped strands are preferably cut to a length of 3-8 cm. As the binder, for example, an acrylic resin binder, a polyester binder, or the like can be used. The preform 11 is preferably dried by heating at 50 to 100 ° C. for 30 seconds to 5 minutes. Examples of means for drying the preform 11 include hot air blowing drying.

Next, the cap inner surface forming surface 6 of the cap male mold 9 is formed.
A glass cloth such as REW # 320 manufactured by Nippon Glass Fiber Co., Ltd. and REM450, REM600, REM30 manufactured by Nippon Glass Fiber Co., Ltd.
A thin piece 12 made of glass fiber such as a chopped strand mat such as 0 is sandwiched, and the preform 11 is set in the female mold 10 for the cap body, the molding material 13 is poured into the preform 11, and then the mold is placed. A double-walled mounting body having an outer wall 3 formed of a glass fiber reinforced thermosetting resin and an inner side wall 4 formed of a glass fiber reinforced thermosetting resin by tightening, pressurizing and heating The cap body 1 having the mounting portion 5 is manufactured. The pressure when pressurizing is 7
It is preferably 0 to 150 kg / cm ² . The heating temperature of the cap male mold 9 is preferably 90 to 130 ° C., and the heating temperature of the cap female mold 10 is 100 to 150 ° C.
The temperature is preferably set to ° C. Pressurization and heating time are preferably 2 to 5 minutes. The glass fiber thin piece 12 is
Thickness 0.5 to 3.5mm, length 30 to 50mm, width 4
It is preferably 0 to 70 mm.

Next, the mold is opened, the cap body 1 is taken out from the mold, the burrs protruding from the periphery of the cap body 1 are cut and removed with scissors, and the peripheral end face of the cap body 1 is smoothed by grinding with a grinder. To do.

Next, as shown in FIG. 6, the cap body 1 is set on the processing machine 14, and a drill 15 is formed in the inner wall 4 of the cap body 1 to form a through hole 16 for attaching the mounting body 2. Next, as shown in FIG. 7, the protrusion 18 of the thermosetting resin hook 17 provided at the end of the mounting body 2 is attached to the mounting body mounting portion 5 of the cap body 1.
After inserting the thermosetting resin hook 17 into the mounting body attachment portion 5 of the cap body 1 while pressing the elastic piece 19 against the inner side wall 4 of the cap, the protrusion 18 is attached as shown in FIG. By projecting it into the through hole 16 and returning the elastic piece 19 to its original shape,
The mounting body 2 is mounted in the cap body 1 to manufacture the glass fiber reinforced thermosetting resin helmet according to the present invention. The thermosetting resin hook 17 can be integrally formed of a thermosetting resin such as polyethylene or polypropylene.

In order to mount the mounting body 2 in the cap body 1, the end of the mounting body 1 may be fixed to the inner side wall 4 of the mounting body mounting portion 5 of the cap body 1 by rivets.

[0021]

【Example】

Example 1 5 RER231 (Roving made by Nippon Glass Fiber Co., Ltd.)
It is supplied to a mesh preform that is sucked while being cut to a length of cm, and sprayed with Primal HA-16 (a polyacrylic acid emulsion-based binder made by Nippon Acrylic Chemical Co., Ltd.) by a spray gun and then dried by blowing with hot air. By drying at 80 ° C for 2 minutes,
A substantially hat-shaped preform 11 consisting mainly of chopped strands 5 cm long was formed.

The preform 11 is placed in the female mold 10 for the cap body.
The PM-142 (Dainichi
Unsaturated polyester resin manufactured by Ink Chemical Co., Ltd.) 85 weight
Quantity part, Niper FF (benzoylper oki manufactured by NOF CORPORATION)
Side) 2 parts by weight, calcium carbonate 15 parts by weight, stainless steel
2 parts by weight zinc alynate and Polyton Green (Dainippon
Coloring agent manufactured by Ink Chemical Co., Ltd.) 2 parts by weight of molding material
13 is poured and the inner surface of the cap male surface of the male mold 9 is formed.
In the gap between the six and four mounting body mounting portion forming die members 8.
Each REW # 320 (Nippon Glass Fiber Co., Ltd. glass black
12 mm thick, thickness 2 mm, length 40 mm, width 50 mm)
After that, tighten the mold, 115kg / cm ^TwoPressurized with pressure
While heating the cap female mold 10 to 120 ° C.
Heating the cap male mold 9 to 105 ° C and holding it for 3 minutes
Formed by glass fiber reinforced thermosetting resin
Formed by outer side wall 3 and glass fiber reinforced thermosetting resin
Mounting body mounting portion 5 having a double wall structure with the inner wall 4
A cap with four (chopped strand content 35
Wt%) 1 was produced.

Next, the mold is opened, the cap body 1 is taken out from the mold, the burrs protruding from the periphery of the cap body 1 are cut and removed with scissors, and the peripheral end surface of the cap body 1 is smoothed by grinding with a grinder. did.

Next, as shown in FIG. 6, the cap body 1 is set on the processing machine 14, and a drill 15 is used to attach the mounting body 2 to the inner side walls 4 of the four mounting body mounting portions 5 of the cap body 1. Hole 16
Was formed.

Then, as shown in FIG. 7, the protrusions 18 of the four polyethylene hooks 17 provided at the end of the mounting body 2 are pushed to the inner wall 4 of the mounting body mounting portion 5 of the cap body 1. After inserting the thermosetting resin hook 17 into the mounting body mounting portion 5 of the cap 1 while deforming the elastic piece 19 by applying it, the protrusion 18 projects into the through hole 16 as shown in FIG. Let the elastic piece 19
The wearing body 2 was attached to the inside of the cap body 1 by returning to the original shape, and the glass fiber reinforced thermosetting resin helmet according to the present invention was manufactured.

Example 2 RER 231 (Roving made by Nippon Glass Fiber Co., Ltd.)
It is supplied to a mesh preform which is sucked while being cut to a length of cm, and sprayed with Primal HA-16 (a polyacrylic acid emulsion-based binder made by Nippon Acrylic Chemical Co., Ltd.) and then dried by hot air blowing to 80 ° C.
A preform 11 in the form of a substantially hat body consisting mainly of chopped strands 7 cm long was formed by drying for 2 minutes.

The preform 11 was set in the cap body female mold 10, and 85 parts by weight of PM-142 (an unsaturated polyester resin manufactured by Dainippon Ink and Chemicals, Inc.) and Niper FF (Nippon Yushi Co., Ltd.) were set in the preform 11. 2 parts by weight of benzoyl peroxide), 15 parts by weight of calcium carbonate, 2 parts by weight of zinc stearate, and 2 parts by weight of Polyton Green (coloring agent manufactured by Dainippon Ink and Chemicals, Inc.), and a cap body male. In the gaps between the cap inner surface forming surface 6 of the mold 9 and the four mounting body mounting portion forming mold members 8, REM300 (Nippon Glass Fiber Co., Ltd. chopped
Strand mat, thickness 2mm, length 40mm, width 50m
m) After sandwiching 12, clamp the mold to 115 kg / cm
^It is formed of glass fiber reinforced thermosetting resin by heating the cap body female mold 10 to 120 ° C. while heating the cap body male mold 9 to 105 ° C. for 3 minutes while applying the pressure of ^2. A cap body having four mounting body attachment portions 5 having a double wall structure including an outer side wall 3 and an inner side wall 4 formed of glass fiber reinforced thermosetting resin (strand content ratio 3
5% by weight) 1.

Then, the mold is opened, the cap body 1 is taken out from the mold, the burrs protruding from the periphery of the cap body 1 are cut and removed with scissors, and the peripheral end face of the cap body 1 is smoothed by grinding with a grinder. did.

Next, as shown in FIG. 6, the cap body 1 is set on the processing machine 14, and a drill 15 is used to attach the mounting body 2 to the inner side walls 4 of the four mounting body mounting portions 5 of the cap body 1. Hole 16
Was formed.

Next, as shown in FIG. 7, the protrusions 18 of the four polyethylene hooks 17 provided at the end of the mounting body 2 are pushed onto the inner wall 4 of the mounting body mounting portion 5 of the cap body 1. After inserting the thermosetting resin hook 17 into the mounting body mounting portion 5 of the cap 1 while deforming the elastic piece 19 by applying it, the protrusion 18 projects into the through hole 16 as shown in FIG. Let the elastic piece 19
The wearing body 2 was attached to the inside of the cap body 1 by returning to the original shape, and the glass fiber reinforced thermosetting resin helmet according to the present invention was manufactured.

[0031]

INDUSTRIAL APPLICABILITY The glass fiber reinforced thermosetting resin helmet according to the present invention does not project the rivet head to the outside of the cap body.
The rivet will not be deformed and damaged. Further, even when working at a high temperature for a long time, the head has a higher temperature than the conventional one because the helmet has a double structure.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a glass fiber reinforced thermosetting resin helmet according to the present invention.

FIG. 2 is a perspective view showing a state in which a glass fiber thin piece body is sandwiched in a gap between a cap body male mold member of a cap body male mold and a mounting body mounting portion forming mold member and viewed from below.

FIG. 3 is a cross-sectional view showing a state in which a preform is set in a female mold for a cap body and a molding material is poured into the inside of the preform.

FIG. 4 is a cross-sectional view showing a state in which a male cap die and a female die cap are clamped.

FIG. 5 is a cross-sectional view showing a state in which the male cap body mold and the female cap body mold are opened to take out the cap body.

FIG. 6 is a cross-sectional view showing a state in which a through hole is formed in an inner wall of a mounting body mounting portion having a double-wall structure of an outer wall and an inner wall.

FIG. 7 is a partially cutaway perspective view showing a state in which the mounting body is attached to the mounting body mounting portion of the cap body.

FIG. 8 is a partially cutaway perspective view showing a state in which the mounting body is attached to the mounting body mounting portion of the cap body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap body 2 Mounting body 3 Outer side wall 4 Inner side wall 5 Mounting body mounting part 6 Cap inner surface forming surface 7 Cap body male mold member 8 Mounting body mounting part forming mold member 9 Cap body male mold 10 Cap body female metal Mold 11 Preform 12 Glass fiber thin piece body 13 Molding material

Continuation of the front page (51) Int.Cl. ⁶ Identification number Reference number within the agency FI Technical display location B32B 5/28 B32B 5/28 A 27/04 27/04 Z // B29K 101: 10 105: 12 B29L 9: 00 31:48

Claims (4)

[Claims] 1. A glass fiber reinforced thermosetting resin helmet in which a wearing body is attached to the inside of a cap body, wherein an outer wall portion formed of the glass fiber reinforced thermosetting resin and the glass fiber reinforced thermosetting resin are used. A glass fiber reinforced thermosetting resin helmet, wherein a wearing body is attached to an inner wall portion of a mounting body attachment portion having a double wall structure with an inner wall portion formed by. 2. A method of manufacturing a glass fiber reinforced thermosetting resin helmet in which a wearing body is attached to the inside of a cap body, wherein an outer wall formed of the glass fiber reinforced thermosetting resin and glass fiber reinforced heat are used. A cap body having a wearing body mounting portion having a double-wall structure with an inner side wall formed of a curable resin, and mounting the wearing body on the inner side wall of the wearing body mounting portion. A method of manufacturing a glass fiber reinforced thermosetting resin helmet having a body attached inside. 3. A cap body male mold member having a cap body inner surface forming surface, and a plurality of mounting body mounting portions arranged around the cap body inner surface forming surface with a gap therebetween. Using a cap male mold having a mold member and a cap female mold, a glass fiber thin piece body is sandwiched in a gap between the cap inner surface forming surface and the mounting body mounting portion forming mold member, and a matched die By molding, a cap body having a wearing body attachment part having a double wall structure of an outer wall formed of glass fiber reinforced thermosetting resin and an inner side wall formed of glass fiber reinforced thermosetting resin is manufactured. A method of manufacturing a glass fiber reinforced thermosetting resin helmet in which a mounting body is attached inside the cap body according to claim 2. 4. A cap body male die member having a cap body inner surface forming surface and a plurality of mounting body attachment portions arranged around the cap body inner surface forming surface with a gap therebetween. Using a cap male mold having a mold member and a cap female mold, a glass fiber thin piece body is sandwiched in a gap between the cap inner surface forming surface and the mounting body mounting portion forming mold member, and Set the preform in the hat body female mold, pour the molding material inside the preform,
Then, the mold was clamped, pressurized and heated to form a double wall structure of an outer wall formed of glass fiber reinforced thermosetting resin and an inner side wall formed of glass fiber reinforced thermosetting resin. The method for manufacturing a glass fiber reinforced thermosetting resin helmet having a mounting body mounted inside the cap body according to claim 2, wherein a cap body having a mounting body mounting portion is manufactured.