Stop troubleshooting and get moulding.

Solve the secret science to your engineering plastic injection moulding problems with fast UK machine supplier Eastern Plastics Machinery™

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Black and white logo with stylized initials 'JG' and the text 'John Guest'

Our Clients

Johnson & Johnson logo in white script on black background
Black background with the white Molex company logo, consisting of the word 'molex' inside a circle.
Toyota logo in white on a black background

The Secret is in the

Science

Stuck troubleshooting and not hitting production KPIs?

Two workers in safety vests and helmets shaking hands in front of multiple large matsui industrial dryers in a factory setting.

Engineering plastic is complex. And sometimes no matter how many times you troubleshoot, you either can’t start production or KPI’s are frustratingly low.

Have you ever considered its not your product design or plastic material, but the science behind your machinery thats shrinking your operating window?

Eastern Plastics Machinery™ founders/technical engineers spent decades shadowing the mastermind creators in Japan of all electric plastic injection moulding machines.

Spending the last 50+ years supplying machinery direct from Europe to help plastic injection moulding manufacturers lift the lid on some of their most complex plastic injection moulding problems and get production increased in a matter of weeks not months.

Working from technical problems all the way through to fast delivery, setup, technical assistance and supplier of injection moulding parts of plug and play Japanese machinery, Eastern Plastics Machinery has helped clients all over Europe:

  • Widen operating windows to increase production KPI’s

  • Build bespoke cell’s and deliver machinery in weeks not months

  • Deliver Plug and Play machinery, needing very little training

  • Reduce production downtime needed for cleaning and breakdowns

Our Products.

Our Products.

Highly Bespoke, Better Design, Wider Operating Windows.

  • Our proud partner Japanese Steel Works (JSW) have the widest range of highly bespoke low and high tonnage all electric injection moulding machines for sale in the UK of any other provider in the market.

    Including Vertical Clamp Rotary Table, Magnesium and clamping force for up to 3,000 tonnes - with some available for delivery direct from Europe in as little as 2 weeks.

    Click here or the button opposite for full product details

  • Prone to degradation, engineering plastics can be challenging to mould.

    Our partners at Seiki realised standard hot runners built with 1 body temperature control ended up being the cause of degradation and productivity loss.

    They created a unique valve and probe hot runner design with a simple to operate gate temperature control to solve this problem.

    Click here or the button opposite to see how Seiki hot runners work

  • Engineering plastic are hydroscopic and absorb moisture from the environment, failure to remove this moisture or the fines and dust prior to injection moulding causes common problems such as silver streaks, black specks and rejects that can ruin your production KPI’s.

    Our partners Matsui recognised standard drying systems were actually the cause of these common problems.

    Matsui cut drying time by half, keep production output constant and eradicate silver streaks and black specks, with their worlds first continuously cycling honeycomb desiccant rotor and hopper filtration system.

    Click here or the button opposite to see how Matsui dryers work

  • Your plastic moulding process is focused around 2 main things - speed and production levels. And once you’re producing parts, you may think that nothing could harm your process

    Born out of the pen industry in 1970 to speed up their own production of delicate materials, Sailor Robotics recognised the need for speeding up production with less vibration in the chuck so that delicate products do not come loose and turn into rejects and downtime due to failure is measure in years not months like other European robots (typical fix time every 5-20 years)

    Click here or the button opposite to see how Sailor Robots works

Highly bespoke cell setups and better machine design will make or break your operating window. And for complex designs and engineering plastics, this can be crucial to production.

We supply the widest range of bespoke Japanese Injection Moulding Machine brands, Hot Runners, Ancillary, Dryers and Robotics, with uniquely patented technology to widen operating windows delivering direct from Europe in weeks not months.

Click for Full Product Details

Trusted Supplier of

Japanase Steel Works Logo in black - JSW Injection Moulding Machine UK Supplier
Matsui logo in black letters with a letter '8' on it side with a white line striking through the middle - Matsui Dryers UK Supplier
SEIKI logo with the tagline 'Making the Impossible Possible.' - Seiki Hot Runner UK Supplier
SAILOR' logo in large white letters on black background and Japanese characters below - Sailor Robots UK Supplier

Supplying holistic, unstoppable productivity.

Three generations of passion.

Group of nine men including Ken Siddall standing and crouching outside in front of a large plastic moulding office building, some wearing suits and others in casual work attire, during daytime.
Group of three people in formal attire standing inside an injection moulding shop floor, posing for a photo. Two men and one women, with the woman in the center holding a handbag. Background includes machinery and other individuals.
Three men in a mid-20th century industrial setting, engaged in conversation, with machinery in the background, including Hideo Horiguchi and Chris Siddall
Two children, one called Michelle Siddall standing in a shop floor of injection moulding machines at Molex factory. The girl is smiling and holding a plastic part from a Nokia 3310 phone, while the boy is also smiling.
A man called Chris Siddall with light skin and short brown hair, smiling and crossing his arms, standing in front of a large, orange meiki plastic moulding industrial machine in a workshop.

Started by technical engineers - the late Ken Siddall in 1976, joined by his son Chris Siddall in 1978, and later joined by Chris’ daughter designer and growth marketer Michelle Siddall in 2025 - Eastern Plastics has been the leading UK supplier and technical support for Japanese Steel Works, Seiki, Matsui and Sailor Robots supplying to clients all over Europe for over 50 years.

Flying to and from Japan for a decade throughout the 1970’s, Chris Siddall moved from his trade in jewellery and diamond mounting and trained in Japan alongside mastermind of research and development at Meiki (part of Japanese Steel Works) Hideo Horiguchi at their laboratory and test center in Kwagucci, Tokyo.

He developed a deep understanding how to building machinery from the ground up, developing patents, researching molecular materials and understanding the scientific reasons behind ‘why’ machinery throughout the injection moulding machine network react they way they do.

Holistic unstoppable productivity for plastics injection moulding became Chris and Ken Siddall’s lifetime passion, and has helped solve some of the most complex injection moulding technical problems for some of the biggest clients across the fields of electrical, automotive, healthcare, medical and waterworks including John Guest and Molex.

Meet The Team

Contact Us

Interested in our products or would like to talk through a technical problem of your own?

Feel free to contact us via the below or complete our the form

Telephone: +44 1376 56 22 88
Email: info@easternplastics.co.uk