التعاون

فنون

الجمال والعناية

حِرَف

الثقافة والتاريخ

ترفيه

البيئة

الطعام والمشروبات

الهندسة العكسية

العلوم

رياضة

التقنية

الأجهزة القابلة للارتداء

$Chemical-Resistant Gloves: Butyl Latex over Natural Rubber on a Cotton Liner (Hart & Collyer, US 4,190,685, 1980)$

John A. Hart and John C. Collyer · Public domain (US patent drawing)

أنشأه

Tex

3. نوفمبر 2026

Chemical-Resistant Gloves: Butyl Latex over Natural Rubber on a Cotton Liner (Hart & Collyer, US 4,190,685, 1980)

Dipped rubber gloves built in layers on a knitted cotton liner: one coat of natural rubber, then five coats of butyl rubber, which lets very little liquid or vapour through. Each coat is dipped from latex on a porcelain hand form, and the whole glove is cured under steam and air pressure. Made in Canada to protect soldiers against chemical warfare agents; worn gloves showed no penetration in 24 hours of field use. Result: flexible, soft chemical-resistant gloves with a comfortable cotton lining. Source: J. A. Hart and J. C. Collyer, US 4,190,685 (1980), latex method. Unknown: sizes, the pigments. Picture: the patent drawing.

متقدم

Unknown

التعليمات

Sew the cotton liner

Cut knitted or interlock cotton fabric to a glove shape and sew it into a glove. It stretches both ways, soaks up sweat and makes the glove easy to put on and take off. Not given: sizes, the knit.

المواد لهذه الخطوة:

قماش قطني محبوك1 liner

الأدوات المطلوبة:

مقص

ماكينة خياطة

أبعاد غير معروفة

Dip in coagulant

Pull the liner onto a porcelain hand form and flame it to smooth off the surface. Dip it in a 10 % solution of acetic acid in acetone, then turn the form for about 2½ minutes at 24 °C until it is dry. The coagulant sets the latex before it can soak through the cloth.

المواد لهذه الخطوة:

حمض الخل (الجليدي)1 10 % in acetone

أسيتون1 solvent

الأدوات المطلوبة:

قالب القفاز

موقد بروبان

Dip the natural rubber coat

Dip the liner into natural rubber latex (the patent uses LOTOL 1185) and leave it 5 seconds. Draw it out, turn it upside down and let it dry. Scrub the rubber film with an abrasive cleaner, a brush and water, and dry it again.

المواد لهذه الخطوة:

$لاتكس المطاط الطبيعي$ لاتكس المطاط الطبيعي1 bath

منظف كاشط1 as needed

الأدوات المطلوبة:

قالب القفاز

فرشاة فرك

Mix the butyl latex bath

Mix, in parts by dry weight: butyl rubber latex 100, sulphur 3, zinc dibutyldithiocarbamate 4, zinc oxide 5, formaldehyde 0.1 as a preservative, a liquid dithiocarbamate curing accelerator 4 (Merac 255 in the patent), and 6.5 of pigments (olive drab in the patent). Not given: the pigments.

المواد لهذه الخطوة:

$لاتكس مطاط البيوتيل$ لاتكس مطاط البيوتيل100 parts dry

كبريت3 parts

ثنائي بيوتيل ثنائي ثيوكربامات الزنك4 parts

مسحوق أكسيد الزنك5 parts

محلول الفورمالدهيد (فورمالين ٣٧ ٪)0.1 parts formaldehyde

مسرّع ثنائي ثيوكربامات سائل4 parts

مادة غير معروفة6.5 parts pigment

الأدوات المطلوبة:

محرّك تقليب

Dip five butyl coats

Dip the glove into the butyl latex and draw it out at 10 cm per minute. At once turn the form at about 8 rpm at 24 °C until the film has gelled, then dry it upside down in an oven at 66 °C for 1 hour. Wash, dip and dry again until there are five butyl coats; do not use the abrasive cleaner on the butyl film.

الأدوات المطلوبة:

قالب القفاز

فرن تجفيف

Cure and finish

Dry the glove at 66 °C for 1 hour. Cure it for 3 hours in a pressure vessel with 30 psi steam in the jacket (131 °C) and 26 psi air in the chamber. Strip the gloves from the forms while hot; when cool, trim them and wash them in soapy water.

المواد لهذه الخطوة: