CN1049964A - Wood-pulp safety helmet - Google Patents
Wood-pulp safety helmet Download PDFInfo
- Publication number
- CN1049964A CN1049964A CN 89107181 CN89107181A CN1049964A CN 1049964 A CN1049964 A CN 1049964A CN 89107181 CN89107181 CN 89107181 CN 89107181 A CN89107181 A CN 89107181A CN 1049964 A CN1049964 A CN 1049964A
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- safety helmet
- wood pulp
- sulfate wood
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- pulp
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Abstract
Wood-pulp safety helmet is articles for labour protection, and it is to be main component with the sulfate wood pulp, and adds compositions formations such as reinforcer and waterproof and flame retardant agent.These additives have Tai-Ace S 150,216 resol, 827 oligomeric azanols, gum rosin etc.Make safety helmet by sulfate wood pulp being pulled an oar, joined slurry, vacuum hydro-extraction, hot-press solidifying moulding and polishing technology such as spray paint.Product of the present invention has advantages such as the low static resistance of light, heat insulation, ventilative, comfortable, the nontoxic and cost of material is good, is widely used in high temperature flammable and explosive posts application such as metallurgy, chemical industry, coal.This technical target of the product reaches the technological standard of each major country of our times.
Description
The present invention is articles for labour protection, and it relates to the material formula and the manufacture craft of safety helmet.
Present employed safety helmet has plastic cap, glass reinforced plastic cap and other rattans, wicker, bamboo weaving cap etc.The manufacture craft of its plastic cap and glass reinforced plastic cap is to adopt casting and compression moulding, and rattan, willow, bamboo weaving cap are all adopted manual braiding.
Feel vexed, hot, heavy when the main drawback of plastic cap, glass reinforced plastic cap is to use, bring very big discomfort, unhappy sensation is arranged, cause misoperation easily to the user.Plastic cap with regard to softening transform, especially runs into naked light through can't stand high temperature in the time of 80 ℃, at once with regard to melting, and be bonded on the scalp, makes safety helmet lose the safeguard protection effect.And the safety helmet that rattan, willow, bamboo weaving are knitted can not form industrial production owing to be manual braiding, so technical feature is difficult to stablely, and cost and cost are higher.For the shortcoming of all kinds of safety helmets that overcome current use, the spy works out Wood-pulp safety helmet.
It is to be main component with the sulfate wood pulp for a Wood-pulp safety helmet of the present invention, suitably adds reinforcer, water-resisting agent Tai-Ace S 150,216 resol, 827 oligomeric azanols, gum rosin etc., also can add compositions such as PC type or POROBN type fire retardant as required and constitute.Various composition add-ons are as follows: the oven dry stock weight percent of the add-on of Tai-Ace S 150 and sulfate wood pulp is 9～11%; The oven dry stock weight percent of the add-on of 216 resol and sulfate wood pulp is 4～6%; The oven dry stock weight percent of the add-on of 827 oligomeric azanols and sulfate wood pulp is 13～15%; The oven dry stock weight percent of the add-on of gum rosin and sulfate wood pulp is 3～5%.
The manufacturing process of sulfate wood pulp safety helmet of the present invention can be divided into five programs and promptly pull an oar, joins slurry, vacuum hydro-extraction, hot-press solidifying moulding and polishing treating selvedge and spray paint.
Beating schedule is that the concentration with sulfate wood pulp transfers to 4.5～5%, and button degree of separating transfers to 23～25 ° of SR.
Join the slurry program and be the sulfate wood pulp after above-mentioned making beating, add gum rosin, Tai-Ace S 150,216 resol, 827 oligomeric azanols and fire retardant successively, its add-on becomes to be grouped into weight percent by aforementioned safety helmet and adds.When adding a kind of composition successively, should fully stir, make it even, and then add a kind of composition down.As after adding gum rosin stirring later on 14～18 minutes, treating evenly, add Tai-Ace S 150 again.Restir made it evenly add 216 resol again in 4～6 minutes after adding Tai-Ace S 150, and then stir about 10 minutes, add 827 oligomeric azanols again evenly, and add fire retardant as required, add clear water at last, making sulfate wood pulp concentration is 1.5～1.8%, and promptly containing oven dry stock is 1.5～1.8%.
The vacuum dewatering technique of making Wood-pulp safety helmet is that the sulfate wood pulp solution for preparing is poured in the loose tool of being furnished with copper mesh, and this loose tool is the former of being made by cast aluminium and has eyelet that copper mesh is 24～32 orders, and is placed in the cast aluminium former internal surface.After an amount of solution is housed, impact slurries with wooden mallet, make it be adsorbed on the copper mesh equably from level to level, forming wood pulp cellulose arranges naturally, start vacuum machine simultaneously, utilize negative pressure of vacuum that water is inhaled and go, each thickness of hat felt is decided by eyelet on the aluminum dipping form what and concrete operations.Its vacuum tightness is 530～667 * 10
2Between the Pa.After open fire blotted in the hat felt, the pressure release of water extracter vacuum fell the rubber cap head that is complementary with former again in former, and in the rubber cap head, fill the compression air, moisture in the hat felt is further extruded, till in hat felt, not dripping, about 2～4 minutes of time, pressure by air pressure about 40～60 * 10
4Pa.At this moment discharge air in the rubber cap, remove Rubber end, take out hat felt, the vacuum outgas program is promptly finished.
The hot-press solidifying moulding process of sulfate wood pulp safety helmet is that the hat felt after the vacuum hydro-extraction is put into the former of being cast by 10# aluminium, and the formpiston that will be complementary with it is pressed in the former, then the hat cone tool is heated to 140～160 ℃ with nichrome wire, and add 40～50t pressure, kept 18～20 minutes, hat felt fully solidifies like this, and the mass dryness fraction of cap shell can reach 92～94%, and the cap shell is taken out in last pressure release.
Carry out surface grinding and deburring after taking out the cap shell, and face is made in spraying as requested, hat lining and packing are installed.The manufacturing processed of sulfate wood pulp safety helmet is all finished.
It has following advantage sulfate wood pulp safety helmet of the present invention.Because its adopts thallophyta fiber, life-time service is harmless to human body Jiankang, has overcome plastic cap, the glass reinforced plastic cap allergic phenomena to human body.Because its light weight, heat insulation, ventilative, overcome the sultry and heavy shortcoming of glass reinforced plastic cap and plastic cap.In addition because the Wood-pulp safety helmet Heat stability is good, can under 140 ℃ and-40 ℃ of environment, normally use, and plastic cap promptly softening modification under 80 ℃.The static resistance of Wood-pulp safety helmet is good, alternative rubber safety helmet on inferior other inflammable, the explosive posies of coal mine.The Wood-pulp safety helmet ageing resistance is better, and surpass two and half normal work-ing life.The flame retardant properties of this safety helmet is also better, its raw material abundance simultaneously, and price is low, so cost and cost are lower than plastic cap and glass reinforced plastic cap.Wood-pulp safety helmet is through test, and every technical indicator meets GB2811-81 standard and international standard ISO3873-77, Nippon Standard TIST8131-77, and British Standard BS5240: 77, USS ANSI8891-69, Soviet Union standard Г OCT17047-71.
In view of Wood-pulp safety helmet of the present invention has above-mentioned advantage, so it can be widely used in high temperature and flammable and explosive posts such as metallurgy, chemical industry, colliery.
Claims (15)
1, a kind of Wood-pulp safety helmet is characterized in that this safety helmet is is main component with the sulfate wood pulp, adds compositions such as reinforcer and water-resisting agent Tai-Ace S 150,216 resol, 827 oligomeric azanols, gum rosin and fire retardant respectively and constitutes.
2, the described safety helmet constituent of claim 1 Tai-Ace S 150 is characterized in that the add-on of Tai-Ace S 150 and the oven dry stock weight percent of sulfate wood pulp are 9～11%.
3, described safety helmet constituent 216 resol of claim 1 is characterized in that the add-on of 216 resol and the oven dry stock weight percent of sulfate wood pulp are 4～6%.
4, constituent 827 oligomeric azanols of the described safety helmet of claim 1 is characterized in that the add-on of oligomeric azanol and the oven dry stock weight percent of sulfate wood pulp are 13～15%.
5, the constituent gum rosin of the described safety helmet of claim 1 is characterized in that the add-on of gum rosin and the oven dry stock weight percent of sulfate wood pulp are 3～5%.
6, the described safety helmet constituent of claim 1 fire retardant is characterized in that this fire retardant can add PC type or POROBN type fire retardant as required.
7, a kind of manufacturing process of sulfate wood pulp safety helmet is characterized in that at first will pulling an oar to sulfate wood pulp, joins slurry then, carries out vacuum hydro-extraction again, carries out hot-press solidifying moulding, polishing, deburring at last, sprays paint.
8, the sulfate wood pulp of the described safety helmet manufacturing process of claim 7 making beating is characterized in that sulfate wood pulp concentration is transferred to 4.5～5%, and button degree of separating transfers to 23～25 ° of SR.
9, the described safety helmet manufacturing process of claim 7 joins slurry, it is characterized in that joining gum rosin, Tai-Ace S 150,216 resol, 827 oligomeric azanols weight percent on request in the sulfate wood pulp successively, and behind a kind of material of every adding, stir, add next component substances again, add clear water at last and make sulfate wood pulp concentration 1.5～1.8%.
10, the vacuum hydro-extraction of the described Wood-pulp safety helmet manufacturing process of claim 7, it is characterized in that the sulfate wood pulp for preparing is poured in the cast aluminium former of being furnished with copper mesh eye with holes, and impact slurries with wooden mallet, make its evenly being adsorbed on the copper mesh from level to level, start vacuum machine simultaneously, utilize vacuum that water is inhaled and go.After open fire blots in the hat felt, go the vacuum pressure release, fall the rubber cap head that is complementary with former in former, and in the rubber cap head, fill the compression air, moisture in the hat felt is further extruded, when no water droplet oozed, the rubber cap head was lifted in exhaust, took out hat felt.
11, claim 7 or 10 is describedly utilized vacuum hydro-extraction, it is characterized in that vacuum tightness will be controlled at 530～667 * 10
2Between the Pa.
12, claim 7 or the 10 described copper mesh that utilize vacuum hydro-extraction to be furnished with is characterized in that this copper mesh is placed on the cast aluminium former internal surface, and copper mesh is 24～32 orders.
13, claim 7 or 10 describedly utilizes vacuum hydro-extraction to fill the compression air in the rubber cap head, it is characterized in that air pressure is 50～60 * 10
4Between the Pa, the time is 2～4 minutes.
14, the hot-press solidifying moulding of the described sulfate wood pulp safety helmet of claim 7 manufacturing process, it is characterized in that the hat felt after the vacuum hydro-extraction is put into the cast aluminium former, and the formpiston that matches is pressed in the former, then mould is heated between 140～160 ℃ with nichrome wire, and add 40～50t pressure, kept 18～20 minutes, and made fully solid than back taking-up cap shell.
15, the described hot-forming curing of claim 7, it is characterized in that the mass dryness fraction of its cap shell is 92～94%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107181 CN1022731C (en) | 1989-09-05 | 1989-09-05 | Wood-pulp safety helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89107181 CN1022731C (en) | 1989-09-05 | 1989-09-05 | Wood-pulp safety helmet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1049964A true CN1049964A (en) | 1991-03-20 |
| CN1022731C CN1022731C (en) | 1993-11-17 |
Family
ID=4857082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89107181 Expired - Fee Related CN1022731C (en) | 1989-09-05 | 1989-09-05 | Wood-pulp safety helmet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022731C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963245A (en) * | 2015-07-31 | 2015-10-07 | 董又能 | Paper cap manufacturing method |
-
1989
- 1989-09-05 CN CN 89107181 patent/CN1022731C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963245A (en) * | 2015-07-31 | 2015-10-07 | 董又能 | Paper cap manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1022731C (en) | 1993-11-17 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |