#hdpe

The 415 neck finish is distinguished by two complete thread turns. Additionally, the threads are generally thinner, and the neck is typically taller compared to the 400 and 410 finishes. This design offers a more secure and tighter seal, making it ideal for products that demand higher protection against leakage and contamination. The taller neck and finer threads also contribute to a more refined appearance, which can be advantageous for premium products

Key Differences Between 400, 410, and 415 Neck Finishes

The primary distinctions among the 400, 410, and 415 neck finishes lie in the number of thread turns, thread thickness, and neck height:

Number of Thread Turns: The 400 finish has one thread turn, the 410 has one and a half, and the 415 has two.

Thread Thickness: The 415 finish typically features thinner threads compared to the 400 and 410 finishes.

Neck Height: The 415 finish usually has a taller neck, providing additional space for the threads.

These differences influence the compatibility with various closures and the overall sealing performance.

Applications and Considerations

Selecting the appropriate neck finish depends on several factors, including the type of product, the desired sealing integrity, and the compatibility with closures.

400 Neck Finish: Suitable for products that require easy access and do not demand a high level of sealing, such as certain food items, cosmetics, and household products.

410 Neck Finish: Ideal for products that need a balance between accessibility and sealing, including personal care items and some pharmaceuticals.

415 Neck Finish: Best for products that require maximum protection against leakage and contamination, such as essential oils, chemicals, and high-end cosmetics.

Compatibility with Closures

Ensuring compatibility between the bottleneck finish and the closure is crucial for maintaining product integrity. Closures are designed to match specific neck finishes, and mismatches can lead to leaks, contamination, or user inconvenience. For instance, a closure designed for a 415 neck finish may not fit properly on a bottle with a 400 neck finish due to differences in thread configuration and neck height.

Scientists enhance recyclability of post-consumer plastic

Researchers at the U.S. Department of Energy's (DOE) Institute for Cooperative Upcycling of Plastics (iCOUP) have developed a new method for recycling high-density polyethylene (HDPE).

Using a novel catalytic approach, scientists at DOE's Argonne National Laboratory and Cornell University converted post-consumer HDPE plastic into a fully recyclable and potentially biodegradable material with the same mechanical and thermal properties of the starting single-use plastic. Their paper describing the results was published December 16 in the Journal of the American Chemical Society.

HDPE is ubiquitous in single-use applications because it is strong, flexible, long-lasting and inexpensive. But the ways we produce and dispose of HDPE pose serious threats to our own health and that of our planet.

Many HDPE products are produced from fossil fuels, and most post-consumer HDPE is either incinerated, dumped in landfills or lost in the environment. When it is recycled with current methods, the quality of the material degrades.

SAFETY VENTILATED HELMET WITH TEXTILE RATCHET SUSPENSION 4 Points Ratchet Textile Suspension With Foam Sweat Band, Short Brim For Broader Field Of View, Customized Logo Options, Comfortable, Tuff And Light Weight. Rigid High Density Polyethylene (HDPE) Shell That Will Help To Protect From From Falling Objects. EN397:2000 Tested

Ratchet Harness With Quick Action Ratchet Wheel, Ultimate In Safety & Wearer Comfort. 1 Touch Nylon Suspension System Inside The Hat That Acts As A Shock Absorber.

By Anthony Caggiano

The UK is preparing for a ban on plastic straws from 2020 in a bid to protect rivers and seas from waste.

Consumers and suppliers are looking for more environmentally friendly ‘straw-ternatives’, as reported by Materials World in July (click here). Paper straws have gained support from companies including McDonald’s, and wheat straws have also drawn praise.

Metal options are also an option, including this one, named FinalStraw.

The straw is made from four pieces of stainless steel, which are connected by one continuous piece of food grade silicone. When FinalStraw is pulled out of the case, it automatically self deploys.

A specially designed brush has also been made for cleaning the inside. While soap and water are recommended for general cleaning, the product can be sanitised by boiling it for five minutes, and odours can be removed with vinegar and baking soda.

The product is claimed to have a life cycle of 12,000 uses – about two uses a day for 16 years.

Once the product has reached the end of its life, the company says it will take back all old and used products to recycle the materials and/or make sure it is disposed of properly.

On top of that, the case is made from recycled HDPE.

FinalStraw was founded by Emma Cohen, who has a master’s degree from Harvard in Environmental Management and Sustainability.

She spent four years working in waste minimisation at Los Alamos National Laboratories in the Pollution Prevention department before becoming a ‘straw-trepreneur’.

While attending the University of Santa Barbara, Emma and her friends started a non-profit called Save the Mermaids, an environmental education program to educate children on the harmful effects of single-use plastics.

In 2015, Emma did a TEDx Talk on the effects of plastic straws on oceans and environment. Then in 2017, Emma started working on FinalStraw in hopes of creating a convenient, durable alternative to single-use plastic straws.

In April 2018, FinalStraw was launched on Kickstarter, raising US$1.89 million and has gone on to sell more than 250,000 units.

Shroud I - IV

oil on handmade polyethylene sheet 

2018-2019

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Recycling plastic shopping bags is easy, making it a suitable surface for painting on is a whole other can of worms.  

PURPOSE BUCKET

I made gauntlets and bracers. Very different from one another. I was experimenting…

Will paint/clothe later